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 perpetual inventory system. Also, on December 15 , Monson sells 15 units for $30 each. \begin{tabular}{l|l|l|l|l|} \hline Purchaseat on December 7 & 10 units & 9.$16.00 cost \\ \hline Purchaseat on December 14 & 20 unitgs & $22.00 cost \\ Purchases on December 21 & 1.5 unitan & $24.00 cost \end{tabular} Of the units sold, 8 are from the December 7 purchase and 7 are from the December 14 purchase. Determine the costs assigned to ending inventory when costs are assigned based on specific identification