XYZ Company's records contained the following data for the month ended 3/31/20 Beginning inventory Purchase 1 Sales Purchase 2 Sales Purchase 3 Sales Purchase 4 200 units @ $10/unit 1,300 units @ $11/unit 1,100 units @ $25/unit 1,200 units @ $12/unit 1,300 units @ $25/unit 1,400 units @ $13/unit 1,500 units @ $25/unit 600 units @ $13/unit Compute ending inventory and prepare partial income statements through gross margin for XYZ Company using the FIFO, LIFO, and average inventory costing methods, first for a periodic and then for a perpetual inventory system X Y Z Company