(1) To pay, as the same become due, the principal of and the interest on the bonds of the authority which from time to time are outstanding;
(2) To meet the cost of maintaining and operating the eligible housing units in such projects that are used, occupied, or reserved for use or occupancy by persons of low income, including the cost of any insurance; to meet the administrative expenses of the authority; and to provide reasonable reserves for maintenance and operating expenses; and
(3) To create and maintain such reasonable reserves as may be required in connection with the issuance of any bonds of the authority now outstanding or hereafter issued, and to create and maintain reasonable reserves for its future operations.