Required informotion [The following information applies to the questions displayed below] Trey Monson storts a metchandising business on December 1 and enters into the following three inventory purchases Monson uses a perpetual inventory $ystem. Also, on December 15 , Monson selis 15 units for $28 each. purchases on Decentert? Purchases on Decenber 14 Purchases on December 2 ? 10units&$14.00cost20unitsE$20.00cost15units$22.00cost Required: Determine the costs assigned to the December 31 ending inventory based on the FIFO method