eBookShow Me How Question Content Area FIFO and LIFO Costs Under Perpetual Inventory System The following units of an item were available for sale during the year: Beginning inventory 21 units at $42 Sale 18 units at $61 First purchase 35 units at $44 Sale 33 units at $61 Second purchase 17 units at $45 Sale 16 units at $61 The firm uses the perpetual inventory system, and there are 6 units of the item on hand at the end of the year. a. What is the total cost of the ending inventory according to FIFO? $ fill in the blank b. What is the total cost of the ending inventory according to LIFO?