which one is correct?

Which of the following statements is NOT correct? O A Even in a perpetual inventory system, a business must count inventory at least once a your OB. In a periodic inventory system, merchandiso inventory and purchasing systoms are integrated with the records for Accounts Recewable and Sales Revenue OC Restaurants and small retail stores often use the periodic inventory system OD. In a perpetual inventory system, the cash register at the store is a computer terminal that records sales and updates inventory records