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 28 units for $25 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units @ $10.00 cost 35 units @ $15.00 cost 28 units @ $18.00 cost Required: Monson sells 28 units for $25 each on December 15. Monson uses a perpetual inventory system. Determine the costs assigned to the December 31 ending inventory when costs are assigned based on LIFO. Perpetual LIFO: Goods purchased Cost of Goods Sold Inventory Balance Cost of Goods Date #of units Cost per unit Cost per Cost of unit Cost per Available for Inventory of units or united units sold Sale unit Soid Balance December 7 0.00 $ $ December 14 0.00 0.00 December 15 December 21 Totals