(a) Mortgage loans purchased by the Authority must in the aggregate bear interest at such rate or rates and be sold to the Authority at such price or prices as will in the aggregate produce a yield to the Authority sufficient to:
(b) The yield on such mortgage loans must not exceed the maximum permitted by application of the arbitrage limitations of the Internal Revenue Code of 1986, as amended, and applicable rules and regulations.
900-1 Wyo. Code R. § 1-6