The following represents the inventory of Benita Company for the month of April 100 units @ $16 April 1 Beginning Inventory April 2 Sales April 3Purchases April 10 Sales April 21 Purchases 50 units 300 units @ $24 250 units 400 units @ $32 200 units ril 28Sales a. Assuming a perpetual inventory system is used by Benita Company, what is ending inventory under b. Assuming a perpetual inventory system is used by Benita Company, what is cost of goods sold under c. Assuming a perpetual inventory system is used by Benita Company, what is ending inventory under d. What is the gross margin for a. and b. and c LIFO? FIFO? the Weighted-Average Cost method