Which of the following is a question the auditor would expect to find on the production cycle section of an internal accounting control questionnaire?

(a) Are vendors' invoices for raw materials approved for payment by an employee who is independent of the cash disbursements function?

(b) Are signed checks for the purchase of raw materials mailed directly after signing without being returned to the person who authorized the invoice processing?

(c) Are all releases by storekeepers of raw materials from storage based on approved requisition documents?

(d) Are details of individual disbursements for raw materials balanced with the total to be posted to the appropriate general ledger account?