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 $37 each. Purchases on December 710 units \& $23.00 cost Purchases on December 1420 units $29.00 cost Purchases on December 2115 units &$31,00cost Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method