Bonds issued under this chapter must mature serially or in another manner not more than 40 years after they are issued. The bonds may:
(1) bear interest at a fixed, floating, or other type of rate, and be sold at public or private sale at a price or under terms that the issuer's governing body determines to be the most advantageous reasonably obtainable;
(2) be made callable before maturity at times and prices prescribed by the issuer's governing body;
(3) be in coupon form; and
(4) be registrable as to principal or as to principal and interest.