15A-4. Mannon Sales uses the FIFO method with the perpetual inventory system. Enter the following information in the inventory record form for product 44BX. Be sure to keep the balance on hand up-to- date. 2018 Apr. 1 Balance on hand: 8 urits at a cost of $20 each. 2 Purchased 8 units at a cost of $23 each. 5 Sold 3 units for $31 each. (Remember to use cost and not selling price in the inventory record.) 6. Sold 11 units for $31 each. 8 Purchased s units at a cost of $24 each