Your local Wal-Mart store orders 100 irons from the manufacturer.Upon arrival the delivery manager for Wal-Mart opens the boxes containing the irons, inspects them casually even picking up 2 or 3 of them, all of which look fine.Wal-Mart accepts the shipment and places the irons in stock only to learn after the first ones sell that there is a defect in the electrical plug that keeps the irons from heating up.Can Wal-Mart revoke its acceptance of the goods and refuse to pay? Why or why not?