In the month of June, a department had 20,000 units in beginning work in process that were 80% complete as of conversion cost, these units had $15,000 for material and $35,000 for conversion cost. During June, 90,000 units were started. At the end of June there were 10,000 units in ending work in process that were 40% complete. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. During the month, manufacturing costs charged to the department were: Materials $625,000; Conversion costs $840,000. Using the Weighted Average method, How much is the total cost assigned to the completed units? O a. $107,626 O b. $91,836 O c. $1,407,374 O d. $1,423,164