(a) After a district issues bonds other than preliminary bonds, but before they are sold, the record showing all the proceedings in the creation of the district and the issuance of the bonds shall be filed in the office of the attorney general.
(b) The attorney general shall examine the record and give his opinion on it.

(c) The record may be presented to the attorney general before the bonds are printed, and the bonds may be executed after the record is completed.
(d) After the record is approved, the bonds shall be issued or duly executed.