The directors of the Authority Board may be paid for their services in either (i) the amount provided in the general appropriation act for members of the General Assembly engaged in legislative business between sessions or (ii) a lesser amount as determined by the Authority. Directors of the Authority Board may be reimbursed for all reasonable and necessary expenses as provided in §§ 2.2-2813 and 2.2-2825, if approved by the Authority. Funding for the costs of compensation and expenses of the directors of the Authority Board shall be provided by the Authority.