(a) After the bonds are issued and registered by the comptroller, the board shall offer the bonds for sale and shall sell them on the best terms and for the best possible price.
(b) After all the bonds are sold, the board shall pay to the district depository all money received from the sale.

(c) The board may exchange the bonds for property to be acquired by purchase under contract or in payment of the contract price for work to be done for the use and benefit of the district.