(a) The responsibility for ensuring that only authorized expenditures are paid for by use of state credit cards for which the state agency assumes responsibility for payment and the collection for any unauthorized expenditures which may occur rests with the board, commission, or administrative head in charge of the agency.
(b) The Chief Fiscal Officer of the State shall not be liable for any unauthorized expenditures through the use of state credit cards for which the state agency assumes liability for payment.