5. Calculate January's ending inventory and cost of goods sold for the month using Average cost, perpetual system. Note: Round average cost per unit to 4 decimal places. Enter sales with a negative sign. Problem 8-5 (Algo) Various inventory costing methods [LO8-1, 8-4] [The following information applies to the questions displayed below.] A company began January with 7,000 units of its principal product. The cost of each unit is $9. Inventory transactions for the month of January are as follows: Includes purchase price and cost of freight. 12,000 units were on hand at the end of the month