FIFO and LIFO Costs Under Perpetual Inventory System The following units of an item were available for sale during the year: Beginning inventory 8,100 units at $180 Sale 5,300 units at $300 First purchase 15,000 units at $185 Sale 13,000 units at $300 Second purchase 16,000 units at $192 14,000 units at $300 Sale The firm uses the perpetual inventory system, and there are 6,800 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? $ b. What is the total cost of the ending inventory according to LIFO?