Use the following information for the Quick Study below. Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 18 units for $10 each. Purchases on December 7 Purchases on December 14 8 units @ $4.00 cost 26 units @ $6.00 cost Purchases on December 21 18 units @ $7.00 cost QS 6-13 Perpetual: Inventory costing with specific identification LO P1 Required: Monson sells 18 units for $10 each on December 15. Of the units sold, 6 are from the December 7 purchase and 12 are from the December 14 purchase. Monson uses a perpetual inventory system. Determine the costs assigned to the December 31 ending inventory when costs are assigned based on specific identification. Specific Identification-Perpetual: Inventory Balance Cost per unit Inventory Balance Goods purchased Cost of Goods Sold #of Date # of units Cost per unit Cost per units unit Cost of Goods Sold # of units sold December 7 December 14 $ 0.00 $ 0.00 December 15 December 21 $ 0.00 Totals $ 0.00 $ 0.00 $ 0.00