Sanfillipo, Incorporated, had 800 units of inventory on hand at March 1 of the current year, costing $20 each. Purchases and sales of inventory during the month of March were as follows: Date March 8 Purchases Sales 600 units March 15 400 units @ $22 each March 22 400 units @ $24 each March 27 400 units Sanfillipo uses the perpetual inventory system. According to a physical count, 600 units were on hand at the end of March. The cost of goods sold for March applying the average cost method is: Multiple Choice $20,400. $22,400. $20,960. $21,500