After Approving an Invoice for Payment

After approving an invoice for payment:

A) the receiving department should examine the payment packet to make sure all the documents agree.
B) after payment,the payment packet should be stamped "paid" by the person in the treasurer's department who has authorized the disbursement.
C) checks should be returned to the department who prepared them for mailing.
D) the person who ordered the goods should examine the payment package to make sure all the documents agree.