Required information Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 15 units for $20 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 10 units @ $ 6.00 cost 20 units @ $12.00 cost 15 units @ $14.00 cost Required: Monson sells 15 units for $20 each on December 15. Of the units sold, eight are from the December 7 purchase and seven 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: Goods purchased Inventory Balance Cost of Goods Sold # of Cost per Cost of units unit Goods Sold sold Date Cost per unit # of units # of units Cost per unit Inventory Balance $ 0.00 December 7 December 14 $ 0.00 $ 0.00 December 15 $ 0.00 $ 0.00 December 21 $ 0.00 Totals