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 imventory system. Also, on December 15 , Monson sells 30 units for $25 each f the units sold, 16 are from the December 7 purchase and 14 are from the December 14 purchase. Determine the costs assigne ding inventory when costs are assigned based on specific identification