(a) A commissioner must receive the same compensation as a member of the house of representatives, prorated for length of time served.
(b) A commissioner is entitled to receive the same per diem and allowance for expenses and mileage as provided to a member of the house of representatives in accordance with the regulations promulgated by the commissioner of finance and administration and approved by the attorney general and reporter.
(c) All funds necessary to pay expenses under subsection (a) must be paid from appropriations to the general assembly subject to approval by joint resolution under § 3-18-104.