(a) Any bonds issued by the authority may from time to time be refunded by the issuance, by sale or exchange, of refunding bonds payable from the same or different sources for the purpose of paying:
(b) Any refunding bonds may be sold by the authority at public or private sale at such price or prices as may be determined by its board of directors to be most advantageous, or may be exchanged for the bonds to be refunded. Any such refunding bonds may be executed and delivered by the authority at any time and, from time to time, shall be in such form and denomination or denominations and of such tenor and maturity or maturities, shall contain such provisions not inconsistent with the provisions of this chapter, and shall bear such rate or rates of interest, payable at such place or places, either within or without the state, and evidenced in such manner, as may be provided by resolution of the board of directors.
(c) Any refunding bonds issued by the authority shall be issued and may be secured in accordance with the provisions of Section 24-1A-6.