Which of the following statements is not correct?

A.

Even in a perpetual inventory system, a business must count inventory at least one a year.

B.

Restaurants and small retail stores often use the periodic inventory system.

C.

In a periodic inventory system, merchandise inventory and purchasing systems are integrated with the records for Accounts Receivable and Sales Revenue.

D.

In a perpetual inventory system, the "cash register" at the store is a computer terminal that records sales and updates inventory records.