[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 $50 each Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units $20.00 cost 32 units $30.00 cost 28 units $36.00 cost Required: Determine the costs assigne December 31 ending inventory based on FIFO method Periodic FIFO: Cost of Goods Available for Sale Cost of Goods of units Available for unit Sale Cost per Cost of Goods Sold of Cost of Cost units sold per unit Goods Sold Inventory Balance of units in ending Cost per Ending Inventory sanit Inventory Du