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 Sanfillipo uses the periodic inventory system. According to a physical count, 600 units were on hand at the end of March. The cost of inventory at the end of March applying the FiFO method is: Mulriple Croice $12000 $4,000