In its first month of operations, Cullumber Company made three purchases of merchandise in the following sequence: (1) 252 units at $6,(2) 336 units at $ 8, and (3) 420 units at $ 9. Assuming there are 168 units on hand at the end of the period, compute the cost of the ending inventory under (a) the FIFO method and (b) the LIFO method. Cullumber uses a periodic inventory system. Ending Inventory FIFO $ 1512 LIFO $ -6468