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. Unit Units Cost July 1 July 5 Beginning Inventory 2,000 $ 40 Sold 1,000 July 13 Purchased 6,000 44 July 17 Sold 3,000 Purchased Sold 8,000 5,000 se July 25 July 27 Required: 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. Complete this question by entering your answers in the tabs below. Required A Required B