Required information [The following information applies to the questions displayed below.] Ferris Company began January with 8,000 units of its principal product. The cost of each unit is $6. Merchandise transactions for the month of January are as follows: Purchases Units 6,000 8,000 Unit Cost* $ 7 Total Cost $ 42,000 64,000 Date of Purchase Jan. 10 Jan. 18 8 106,000 14,000 Totals *Includes purchase price and cost of freight. Sales Units 4,000 2,000 4,000 Date of Sale Jan. 5 Jan. 12 Jan. 20 10,000 Total 12,000 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