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 $10 each, Purchase on December 7 Purchases on December 14 Purchases on December 21 18 units $4.00 cost 35 unita $6.00 cost 28 units $7.00 cost Required: Monson sells 28 units for $10 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 UFO Cost of Goods Sold laventory Balance Goods purchased Cost of Goods Cost per unt Available for Sale #of units sold Cost per Cost of Goods unit Sold of units Cost per unt Inventory Balance of units Date December Deconber 14 December December 21