Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales data for DVD players are as follows November 1 Inventory 10 Sale 15 Purchase 20 Sale 24 Sale 30 Purchase 41 units at $90 27 units 21 units at $95 18 units 11 units 21 units at $101 The business maintains a perpetual inventory system, costing by the first-in, first-out method. a. Determine the cost of the goods sold for each sale and the inventory balance after each sale, presenting the data in the form illustrated in Exhibit 3. Under FIFO, if units are in inventory at two different costs, enter the units with the LOWER unit cost first in the Cost of Goods Sold Unit Cost column and in the Inventory Unit Cost column. Cost of the Goods Sold Schedule First-in, First-out Method DVD Date Quantity Nov. 1 10 Purchases Unit Purchases Total Quantity Cost of Goods Sold Unit Cost of Goods Sold TotalInventory Inventory Unit Inventory Tota Cost Sold Cost Cost Now 20 24 30