Ariz. Rev. Stat. § 38-866
D. The board shall:
1. Enter into a contract with a provider or providers to provide retirement plan investments, plan administration and services to participants in the defined contribution plan. The plan shall provide for appropriate long-term retirement-oriented investments and shall include both fixed and variable deferred annuity options. The board shall consider all of the following when determining a company with which to contract:
E. The board may: