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 30 units for $35 each. QS 6-11 Perpetual: Inventory costing with LIFO LO P1 Required: Monson sells 30 units for $35 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