Required information [The following information applies to the questions displayed below.] Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15, Monson sells 28 units for $45 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units @ $18.00 cost 32 units @ $27.00 cost 28 units @ $32.00 cost Of the units sold, 14 are from the December 7 purchase and 14 are from the December 14 purchase. Determine the costs assigned to the December 31 ending inventory when costs are assigned based on specific identification. Date # of units Specific Identification-Perpetual: Goods purchased Cost of Goods Sold Cost per Goods # of units Cost per cost of Goods unit purchased unit sold Sold $ 0.00 # of units Inventory Balance Cost per Inventory unit Balance December 7 $ 0.00 December 14 Total December 14 $ 0.00 $ 0.00 December 15 $ 0.00 Total December 15 $ 0.00 December 21 Totals