op managers delegate all internal control procedures to the accounting department.

b$.$

Accounting department staff$($or the$$ bookkeeper$)$ orders merchandise and approves invoices for payment.

c$.$

Cash received over the counter is controlled by the sales$$ clerk, who rings up the sale and places the cash in the register. The sales clerk matches the total recorded by the register to each$$ day's cash sales.

d$.$

The employee who signs checks need not examine the payment packet because he is confident the amounts are correct.