Sec. 14. All income and other receipts from securities may be:
(1) collected by the custodian bank or safekeeping bank approved for that purpose by the board and deposited in the custodial account or a checking account of the board;
(2) reinvested from the custodial account or checking account when the board determines that the receipts may be safely invested; or
(3) withdrawn by the board for the immediate needs of the fund from the checking account or custodial account.