Perpetual inventory using FIFO Beginning inventory, purchases, and sales data for DVD players are as follows: Nov.1Inventory10Sale15Purchase20Sale24Sale30Purchase140unitsat$29110units150unitsat$30120units35units140unitsat$34 The business maintains a perpetual inventory system, costing by the first-in, first-out method. Cost of Goods Sold Unit Cost column and in the Inventory Unit Cost column. First-in, First-out Method DVD Players Date Quantity Purchases Purchases Purchased Unit Cost Total Cost Nov. 1 Nov. 10 Nov. 15 Nov. 20 Nov. 24 Nov. 30 34 4,760 Nov. 30 Balances x Cost of Cost of Goods Sold Goods Sold Inventory Inventory Inventory