M7-10 Calculating Cost of Goods Available for Sale, Cost of Goods Sold, and Ending Inventory under FIFO, LIFO, and Weighted Average Cost (Periodic Inventory) LO 7-3 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 ir it uses a periodic inventory system. Given the following information, calculate the cost of goods available for sale, ending inventory, and cost of goods sold if Aircard uses (a) FIFO, (b) LIFO, or (c) weighted average cost