[The] authority [when] refunding revenue bonds:
A. may have interest or appreciated principal value payable at intervals or at maturity;
B. may be subject to prior redemption at the authority's option at such time or times and upon such terms and conditions with or without the payment of premiums;
C. may be serial in form and maturity;
D. may consist of a single bond payable in one or more installments; and
E. shall be exchanged for the bonds and any mature unpaid interest being refunded at not less than par or sold at public or negotiated sale at, above or below par and at a price that results in a net effective interest rate that does not exceed the maximum permitted by the Public Securities Act [ 6-14-1 to 6-14-3 NMSA 1978].