XYZ Company's records contained the following data for the month ended 3/31/23: $ per unit Beginning inventory Purchase 1 Sales Purchase 2 Sales Purchase 3 Sales Units 250 550 650 700 700 600 600 20.00 21.00 50.00 22.00 50.00 24.00 50.00 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. Prepare the partial income statements using the FIFO, LIFO, and average inventory costing methods for a perpetual inventory system. Why is the gross profit different? Which method should be used in the financial statements?