Perpetual Inventory Using LIIO 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-o Determine the cost of goods sold sold for each sale and the inventery balance after in Exhibit 4 , Under LIFO, if units are in inventory at two different costs, enter the units with the Cost column and LOWER unit cost first in the Inventory Unit Cost column. Schedule of Cost of Goods Sold LxFo Method DVD Players