Required information Use the following information for the Quick Study below. Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 23 units for $30 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 13 units 30 units 23 units $12.00 cost $18.00 cost $22.00 Cost Required: Monson sells 23 units for $30 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 the LIFO method. Perpetual LIFO: Goods Purchased Cost per Goods unit Purchased # of Units Cost of Goods Sold Cost per Cost of Goods unit Sold #of Units Sold Date Inventory Balance #of Unite Cost Per Inventory Unit Balance December 7 December 14 December 15 December 21