(a) Any municipality or any board, commission, or other authority established by ordinance of any municipality, or the boards of trustees, respectively, of the firemen's relief and pension fund and the policemen's pension and relief fund of any municipality, or any county, or the board of trustees of any retirement system created by the General Assembly, may, in its discretion, invest any of its funds in the bonds of the Board of Developmental Disabilities Services issued under the provisions of this subchapter.
(b) The bonds issued under the provisions of this subchapter shall be eligible to secure the deposit of public funds.