(a) The purchasing state trust company may hold the purchase price and any additional funds delivered to it by the selling institution in trust for the selling institution and may act as agent of the selling institution in disbursing those funds in trust by paying the creditors of the selling institution.
(b) If the purchasing state trust company acts under written contract of agency approved by the banking commissioner that specifically names each creditor and the amount to be paid each, and if the agency is limited to the purely ministerial act of paying creditors the amounts due them as determined by the selling institution and reflected in the contract of agency and does not involve discretionary duties or authority other than the identification of the creditors named, the purchasing trust company:
(1) may rely on the contract of agency and the instructions included in it; and
(2) is not responsible for:
(A) any error made by the selling institution in determining its liabilities and creditors to whom the liabilities are due or the amounts due the creditors; or
(B) any preference that results from the payments made under the contract of agency and the instructions included in it.