Trey Monson starts a merchandising business on December 1 and enters into three inventory purchases: Purchases on December 7 15 units @ $18.00 cost Purchases on December 14 30 units @ $27.00 cost Purchases on December 21 25 units e $32.00 cost Required: Monson sells 25 units for $45 each on December 15. Of the units sold, 12 are from the December 7 purchase and 13 are from the December 14 purchase and assume the periodic inventory system is used. Determine the costs assigned to ending inventory when osts are assigned based on specific identification. Specific Identification Cost of Goods Available for Sale Cost of Goods Sold Inventory Balance Cost per Cost of Goods # of Available for units Cost Cost of # of units # of units Cost in ending Ending unit Sale sold per unit Goods Sold inventory per unit Inventory Purchases December 7 $ $ 0.00 $ $ 0.00 $ 0 December 14 0.00 0.00 o O December 21 0.00 Total 0 $ $ 0 0 $