Perpetual Ifyentory Using FIFo Beginning inventory, purchases, and sales data for portable game players are as follows: The business maintains a perpetual inventory system, costing by the first-in, first-out method. a. Determine the cost of the merchandise sold for each sale and the ifventory balance after pach sale, presenting the data in the form ilfustrated in Exhibit 3. Under FFO, if units are in inventory ot two different costs, enter the units with the LowEH unit cost fret in the Cost of Merchandise Sold Unit Cost column and in the Inventory Unit Cost column