4. Use the following information to calculate ending inventory on (a) a LIFO basis, (b) a FIFO basis, and (c) an average-cost basis. Assume a perpetual inventory system. (6 points) (Show your work)

Dec. 1 Beginning inventory 70 units @ $28

9 Purchases 30 units @ $32

17 Sales 25 units

22 Purchases 15 units @ $36

27 Sales 40 units