Required information [The following information applies to the questions displayed below] Trey Monson starts a merchandising business on December 1 and enters into the following three Inventory purchases. Monson uses a periodic inventory system. 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 35 units $10.00 cost $15.00 cost 28 unita e $18.00 cost Determine the costs assigned to ending inventory when costs are assigned based on the FIFO method. Purchases: December 7 December 14 December 21 Total Periodic FIFO: Goods Available for Sale Cost of Goods Sold Ending Inventory Cost of Goods of of units of units Cost per unit Available for Sale units sold Cost per unit Cost of Goods Sold Cost per Ending in ending unit Inventory Inventory $ 0.00 0.00