OPINION
Defendanb-Appellant Chris Robinson appeals his conviction and sentence for conspiracy to distribute five kilograms or more of cocaine, in violation of 21 U.S.C. §§ 841(b)(1)(A) and 846. Robinson argues that: (1) the district court erroneously instructed the jury to determine the quantity of cocaine “involved in the conspiracy” instead of the quantity individually attributable to him; (2) the district court failed to charge a violation of 21 U.S.C. § 841(b)(1)(C) as a lesser-included offense; (3) the evidence was insufficient to prove his participation in a conspiracy; and (4) there was a prejudicial variance between the indictment and the proof at trial. Finding no merit in any of these contentions, we AFFIRM.
I. BACKGROUND
A grand jury indicted Robinson for his role in a conspiracy to distribute five or more kilograms of cocaine in the Eastern District of Tennessee from December 2003 *636 through March 2006. At trial, the primary-evidence against Robinson consisted of alleged co-conspirator Juan Valentin’s testimony and a series of recorded telephone conversations between Valentin and Robinson that DEA officers intercepted from Valentin’s cell phone over a period of 88 days, beginning on May 5, 2005.
Valentin testified that beginning in December 2003, he developed “a business relationship” with Robinson in which the two of them worked together to sell cocaine. According to Valentin, he sold cocaine to Robinson “once or twice a week” in various quantities, sometimes on credit. The quantity he most frequently sold to Robinson was four-and-a-half ounces, which Valentin described as a “regular,” and the largest single quantity exchanged between them was half a kilogram. Besides purchasing and distributing cocaine, Robinson helped the conspiracy in other ways, Valentin explained. Robinson introduced Valentin to Troy Allison, who became one of Valentin’s “good customer[s]” of cocaine. 1 Valentin testified that Robinson once accompanied him to Memphis, Tennessee, to pick up “a couple kilos” of cocaine.
Most of the recorded telephone conversations consist of Robinson’s ordering various quantities of cocaine. 2 But the calls reveal other aspects of Robinson’s involvement with the business: Robinson twice warns Valentin about police investigation into Valentin’s activities; Valentin several times asks Robinson to help collect money from individuals whom Valentin had given cocaine on credit; and Valentin on one occasion discusses with Robinson how to retrieve a safe full of cash from a car impounded by the police.
After the presentation of all evidence, the district court charged the jury, in part:
If you determine defendant is guilty of the offense charged in Count 1, you must then determine whether that offense involved the particular quantity of drugs charged in the indictment. In Count 1 defendant is charged with conspiring to distribute 5 kilograms or more of a mixture and substance containing a detectable amount of cocaine hydrochloride. On the verdict form I have asked you to answer some questions about the amount of the mixture and substance containing a detectable amount of cocaine hydrochloride in this offense. In determining the amount of controlled substance involved in each of these crimes, you should consider all of my previous instructions regarding the consideration of evidence. You should only answer yes to one of these questions on the verdict form if you determine, first, that defendant is guilty beyond a reasonable doubt of the particular offense charged in the indictment, and, second, that the government has proven beyond a reasonable doubt that the offense involved the specified quantity of a mixture and substance containing a detectable amount of cocaine hydrochloride listed in the question.
Question 1(A) of the verdict form directed the jury to complete the following sentence: “We, the jury, unanimously find that the defendant, - (IS NOT/IS) guilty of the offense charged in Count 1 of *637 the Indictment.” If the jury answered “IS guilty” to Question 1(A), they were directed to answer “Yes” or “No” to Question 1(B): “Do you, the jury, unanimously find the Government has proved beyond a reasonable doubt that the offense charged in Count 1 of the Indictment involved five kilograms or more of a mixture or substance containing cocaine hydrochloride?” If the jury answered “No” to Question 1(B), they were asked to answer Question 1(C): whether the jury found the quantity of cocaine to be at least 500 grams.
During their deliberations, the jury sent a question to the court inquiring “whether Mr. Robinson must have knowledge of the selling of 5 kilograms of cocaine hydrochloride or if he has to have direct involvement with selling 5 kilograms of cocaine hydrochloride.” Robinson’s counsel argued “that knowledge is required” and “that the answer should be yes.” The district court, however, responded:
With respect to the conspiracy, the instructions indicate that the government must prove that two or more persons conspired or agreed to commit the crime of distributing cocaine hydrochloride, the defendant knowingly joined the conspiracy, and the defendant voluntarily and intentionally participated in the conspiracy. Again, the essence of the conspiracy is the agreement, not the accomplishment of the act.
Concerning the drug quantities, you are merely to determine what quantity was involved in the conspiracy the defendant participated in, in the event you find he participated in a conspiracy.
The jury returned a verdict of guilty and found that the quantity of cocaine involved in the conspiracy was five kilograms or more. The district court imposed a sentence of life imprisonment, and Robinson timely appealed his conviction to this Court.
II. ANALYSIS
A. Drug Quantity Instruction
“This court reviews a district court’s ‘actions in responding to questions from the jury’ for abuse of discretion.”
United States v. Davis,
In its initial instructions, and again in response to the jury’s question, the district court directed the jury to determine the quantity of cocaine “involved in the conspiracy.” These instructions tracked the language of 21 U.S.C. § 841(b)(1)(A), which provides:
In the case of a violation of [21 U.S.C. § 841(a) ] involving ... 5 kilograms or more of a mixture or substance containing a détectable amount of ... cocaine ... such person shall be sentenced to a term of imprisonment which may not be less than 10 years or more than life ... If any person commits a violation of this subparagraph ... after two or more pri- or convictions for a felony drug offense have become final, such person shall be sentenced to a mandatory term of life imprisonment without release.
(Emphasis added). 3 21 U.S.C. § 841(a)(1) makes it “unlawful for any person know *638 ingly or intentionally' — -to ... distribute ... a controlled substance.” 21 U.S.C. § 846 in turn provides: “Any person who attempts or conspires to commit any offense defined in this title shall be subject to the same penalties as those prescribed for the offense, the commission of which was the object of the attempt or conspiracy.” The district court thus instructed the jury that the relevant quantity determination is of the quantity involved in the violation of 21 U.S.C. § 841(a) — in this case, a conspiracy to distribute cocaine. The jury’s finding that the quantity equaled or exceeded the threshold amount of five kilograms triggered a mandatory life sentence for Robinson.
Citing our decision in
United States v. Pruitt,
Robinson nonetheless contends that other language from that opinion supports his position. He points, for example, to our observation in
Pruitt
that “[w]hile a person who participates in a drug conspiracy does not necessarily agree to a specific amount in advance, no defendant may be held responsible for acts beyond the scope of his or her participation in the conspiracy.”
Id.
at 644-45 (citing
United States v. Myers,
These statements do not help Robinson as much as he would like. Again, the issue in
Pruitt
was whether a conspiracy comprising multiple transactions was a single violation of 21 U.S.C. § 841(a). The issue was not whether the appellant was culpable for acts of his co-conspirators, and any pronouncements on that topic are dicta. Moreover, that portion of
Pruitt
turned on an analysis of
Pinkerton.
Although our
Pinkerton
analysis was correct, it is inapplicable here.
See United States v. Collins,
Our holding in
Pruitt
affirms this understanding of drug conspiracies. We distinguished culpability for the conspiracy itself from culpability for the substantive offenses of co-conspirators. Although a “small-time” drug seller may not be responsible for all the transactions or actions of his associates, he is responsible for the conspiracy in which he participated. While we observed that the district court included only amounts for which it found the appellant directly responsible, we noted this fact only inasmuch as it demonstrated that he was not improperly held culpable for the substantive offenses of his co-defendants.
Pruitt,
Similarly unavailing is Robinson’s suggestion that the quantity instructions violated the rule articulated by the Supreme Court in
Apprendi v. New Jersey,
The First Circuit has noted that Ap-prendi did not overrule the Supreme Court’s earlier decision that
as long as (1) the jury finds beyond a reasonable doubt that a defendant participated in a conspiracy, and (2) the Court sentences him within the statutory maximum applicable to that conspiracy, the court may “determine both the amount and the kind of ‘controlled substances’ for which [the] defendant should be held accountable — and then ... impose a sentence that varies depending upon amount and kind.”
Derman v. United States,
Here, the district court had no occasion to determine the amount or kind of drugs for which Robinson was personally responsible because there was no range within which the court had discretion to choose a sentence; the quantity of cocaine involved in the conspiracy and Robinson’s prior felony drug convictions triggered a mandatory life sentence. Therefore, because the jury found beyond a reasonable doubt that Robinson had participated in a conspiracy that involved five or more kilograms of cocaine, there can be no
Apprendi
error.
See Derman,
Viewed under the abuse-of-discretion standard, the district court’s response to the jury’s question was not “confusing, misleading and prejudicial.”
Khalil,
B. Lesser-Included-Offense Instruction
Robinson argues that the district court should have charged a violation of 21 U.S.C. § 841(b)(1)(C) (distribution of cocaine with no finding of a threshold quantity) as a lesser-included offense. By failing to do so, Robinson insists, the court deprived the jury of a “third option” and presented them with an “all-or-nothing choice.”
Robinson concedes that he did not request such a charge and that review on this issue is for plain error.
See United States v. Jones,
A criminal defendant is entitled to an instruction on a lesser-included-offense if: (1) a proper request is made; (2) the elements of the lesser offense are identical to part of the elements of the greater offense; (3) the evidence would support a conviction on the lesser offense; and (4) the proof on the element or elements differentiating the two crimes is sufficiently disputed so that a jury could consistently acquit on the greater offense and convict on the lesser.
United States v. Colon,
Because Robinson never requested a lesser-included-offense instruction, he did not satisfy the first prong of Colon and cannot prove any error, much less plain error. Moreover, Robinson’s rights were not prejudiced; the verdict form required the jury to determine beyond a reasonable doubt whether the threshold amounts of five kilograms or 500 grams were involved *641 in the conspiracy. An answer of “No” to both of the quantity interrogatories necessarily would have meant that the jury did not find either of the threshold amounts. The verdict form thus provided a “third option” by allowing the jury to convict Robinson of a conspiracy that did not involve any particular quantity of cocaine.
C. Sufficiency of the Evidence
Robinson argues that the evidence was insufficient to prove the existence of a conspiracy.
5
“In determining the sufficiency of the evidence to support a guilty verdict ‘the relevant question is whether, after viewing the evidence in the light most favorable to the prosecution, any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt.’ ”
Martin,
To establish a violation of 21 U.S.C. § 846, “the government must prove, beyond a reasonable doubt, ‘(1) an agreement to violate drug laws, (2) knowledge and intent to join the conspiracy, and (3) participation in the conspiracy.’ ”
United States v. Caver,
The evidence was sufficient to show that Robinson conspired with Juan Valentin and others to distribute cocaine. Valentin testified that he and Robinson shared a “business relationship” and that they worked together to sell cocaine. Robinson purchased drugs from Valentin once or twice a week, sometimes on credit, over a period of several years. On at least one occasion, Robinson accompanied Valentin to a source city to pick up “a couple kilos” of cocaine. Robinson helped collect money other buyers owed Valentin. He warned Valentin about police activity. He conferred with Valentin about how to recover drug proceeds from an impounded car. Robinson introduced Troy Allison to Valentin, and Allison became one of Valentin’s “good customer^].” From this evidence a rational trier of fact could find that there was an agreement to violate drug laws, that Robinson knowingly and intentionally joined the conspiracy, and that Robinson participated in the conspiracy.
D. Variance
Robinson argues that there was a prejudicial variance between the in
*642
dictment and the proof at trial because the indictment alleged one large conspiracy while the evidence demonstrated several smaller conspiracies. “The court of appeals reviews the question of whether a variance has occurred
de
novo.”
6
Caver,
1. Existence of a Single Conspiracy
“To prove a single conspiracy, the government need only show that each alleged conspirator had knowledge of and agreed to participate in what he knew to be a collective venture directed toward a common goal.”
United States v. Smith,
Here, the government proved that Robinson knew about and agreed to participate in a collective venture to sell cocaine in eastern Tennessee. The same evidence supporting a finding of Robinson’s participation in the conspiracy supports a finding that there was a single conspiracy. Robinson cooperated with both Valentin and “downstream” sellers to maintain a profitable enterprise. Robinson helped Valentin acquire drugs, develop new customers, avoid police detection, and collect money. These actions support the inference that Robinson wanted to protect Valentin’s interests, at least so he could maintain him as a source. Also, Robinson made sure that he had enough cocaine to supply the dealers who were buying from him. The evidence points to a conclusion that there was an “interdependence of the enterprise,”
Caver,
2. Prejudice
“[E]ven if a variance exists, it does not constitute reversible error ‘unless it prejudices [the defendant’s] substantial rights.’ ”
United States v. Lee,
Even assuming a variance, Robinson has failed to demonstrate how he has been prejudiced. This is not a case where there could be a danger of “transferred guilt” from evidence of multiple conspiracies in which Robinson was not involved. In any event, even if the evidence proved only multiple conspiracies, the government has proved Robinson’s involvement in at least one of them.
CONCLUSION
For the foregoing reasons, we AFFIRM Robinson’s conviction and sentence.
Notes
. Troy Allison testified that Robinson had introduced him to Valentin. Allison purchased "a quarter kilo” of cocaine from Valentin upon meeting him and continued to buy from him after that. Allison "ultimately builft] up to” buying one kilogram of cocaine at a time from Valentin, with his largest single purchase being two kilograms.
. In the 14 conversations played for the jury, Valentin and Robinson discuss a minimum total of 38-and-a-half ounces of cocaine.
. Robinson has two prior convictions for felony drug offenses.
. We have previously adopted this view in unpublished opinions.
See United States
v.
Alaniz,
. Robinson does not challenge the sufficiency of the evidence regarding the threshold quantity of cocaine.
. If the issue of variance is not raised at trial, however, review is for plain error.
Caver,
