(a) A district may issue its bonds in various series or issues.
(b) Bonds may mature serially or otherwise not more than 25 years after their date of issue and shall bear interest at any rate permitted by state law.
(c) A district's bonds and interest coupons, if any, are investment securities under the terms of Chapter 8, Business & Commerce Code, may be issued registrable as to principal or as to both principal and interest, and may be made redeemable before maturity, at the option of the district, or contain a mandatory redemption provision.
(d) A district may issue its bonds in the form, denominations, and manner and under the terms, and the bonds shall be signed and executed, as provided by the board in the resolution or order authorizing their issuance.