The board may repay the district for any advance of funds, together with interest, at a rate not to exceed the interest value of money to the district, from any combination of the following sources:
- (a) The proceeds of the sale of bonds authorized for the purposes of the improvement district.
- (b) The taxes levied exclusively upon the taxable property in the improvement district.
- (c) Revenue derived from any source set forth in Section 72077 hereof.