Requirement c. Identify deficiencies in internal control for sales and cash receipts. (Select all that apply.) A. A credit sale is approved by the supervisor, but it should be approved by higher management. B. There is a lack of accounting for a numerical sequence of sales invoices. C. Supervisor enters all sales in the cash register, recaps sales and cash, and compares the totals to the tapes. She also receives all invoices from salesclerks. D. The aged trial balance is compared to the general ledger but also should be compared to invoices less cash receipts. E. There is no internal verification of key entry for customer name, date, and sales classifications on either cash receipts or sales. F. There is a lack of internal verification of all of the accounting work done by the accounts receivable clerk. G. There is no internal verification of posting to the accounts receivable master file or posting to the general ledger