(a) A participant may elect to receive distribution of the participant's share of the individual account in a
- (1) lump sum payment, which is a single payment of the entire balance in the account;
- (2) periodic lump sum payment, which is a payment of a portion of the balance in the account, not more than twice each year;
- (3) period certain annuity payment, which is an annuity payable in a fixed number of monthly installments for a duration of 60, 120, or 180 months;
- (4) life annuity with a period certain payment, which is an annuity payable until the later of the first day of the month in which the annuitant's death occurs, or the date on which the payment of a fixed number of monthly installments is completed; the period certain for installments is 120 or 180 months;
- (5) single life annuity payment, which is an annuity payable monthly until the first of the month in which the annuitant's death occurs;
- (6) joint and survivor annuity payment, which is an annuity payable monthly to the member until the first of the month in which the member's death occurs; after the member's death, a survivor annuity equal to 50 percent or 100 percent of the member's benefit, as previously elected by the member, shall be paid monthly to the joint annuitant for the remainder of the survivor's lifetime; or
- (7) payment as authorized by a regulation adopted by the commissioner of administration.