To provide assurance that each voucher is submitted and paid only once, an auditor most li...

To provide assurance that each voucher is submitted and paid only once, an auditor most likely would examine a sample of paid vouchers and determine whether each voucher is

A. Supported by a vendor’s invoice.

B. Stamped “paid” by the check signer.

C. Prenumbered and accounted for.

D. Approved for authorized purchases.