Materials costs of $1200000 and conversion cost of $1500000 were charged to a processing department in the month of September. Materials are added at the beginning of the process while conversion costs are incurred uniformly throughout the process. There were no units in beginning work in process inventory, 20000 units were started into production in September, and there were 12000 units in ending work in process inventory that were 40% complete as to conversion costs at the end of September. What was the total manufacturing cost assigned to the 12000 units in the ending work in process inventory? $2126250. $1620000. $720000. $1282500