Wilson Inc. uses process costing. Its Sanitizing Department had no beginning Work in Process inventory, though it added materials of $200,000 and conversion costs totaling $450,000 during May. Materials are added at the beginning of the process and conversion costs are added evenly throughout the process. During May, 75,000 units were completed. The May 31 Work in Process inventory balance consisted of 25,000 units that were 60% complete. What is the cost of the direct materials included in ending Work in Process inventory for May using the Weighted Average Method? O $50,000 O $525,000 O $75,000 O $125,000 $375,000