Perpetual inventory using LIFO Beginning inventory, purchases, and sales data for DvD players are as follows: The business maintains a perpetual inventory system, costing by the last-in, first-qut method. Determine the cost of goods sold for each sale and the inventory bolance after each sale, presenting the data in the form illustrated in Bahibit 4. Under LIFO, if units are in inventary at two different costs, enter the units with the HIGrea unit cost first in the Cost of Goods Sold Unit Cost column and LOWER unit cost first in the Inventery Unit Cont column. The business maintains a perpetual imventory system, costing by the last-in, first-cut method