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[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 $6. Inventory transactions for the month of January are as follows: * Includes purchase price and cost of freight. 10,000 units were on hand at the end of the month. Required: 1. Calculate January's ending inventory and cost of goods sold for the month using FIFO, periodic system