Aircard Corporation tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period as if it uses a perpetual inventory system. The following are the transactions for the month of July, Units Unit Cost 3.100 $51 July 1 Beginning Inventory July 5 Sold July 13 Purchased July 17 Sold July 25 Purchased July 27 Sold 55 1,550 7100 4.100 9.100 6,100 61 ces Calculate the cost of ending inventory and cost of goods sold assuming a perpetual inventory system is used in combination with (a) FIFO and (b) LIFO. (a) FIFO FIFO (Perpetual) Units Cost per Unit Total $ 0 Beginning Inventory Purchases July 13 July 25 0 Total Purchases Goods Available for Sale Cost of Goods Sold Units from Beginning Inventory Units from July 13 Purchase Units from July 25 Purchase Total Cost of Goods Sold Ending Inventory