Trey Monson sharts a marchandising busiress on Deoember 1 and enters into the folowing three inventory purchases: Purchases on December 14 Purchasos on December 21 20 unts $16.00 cost 35 unts $24.00 cost 30 unts $29.00 cost Required: Monson salls 30 unts for $40 each an December 15 Of the units sold, 16 are from the December 7 and 14 are from the Decomber 14 purchase. Monson uses a perpetual inventory system Ootermine the costs assigred to the December 31 ending inventory when ooets are assigned based on speoific identcation. Specific Perpetual Ceat of Coods Sold of Cost per Cost of Goodsof Cost per units Cost per Inventory Balance Dabe units unit units unit 20 16.00 s 0.00 5 0.00 Oscember 15 $ 000 s 29.00 s 00o Totals