WP Manufactures a machine tool that goes through three processing departments- Cutting, fixing and polishing. Raw materials are introduced at the start of the work in the cutting department itself. The Work-in-process T-account is as follows: Work-in-Process - Cutting Department Inventory, May 1 $273,600 Completed and transferred to the Mixing department ? Materials S522,800 $343,104 Conversion Inventory, May 3 ? The May 1 work in process inventory consisted of 95,000 pounds with S155,800 in materials cost and $117,800 in conversion cost. The May 1 work in process inventory was 100% complete with respect to materials and 80% complete with respect to conversion. During May, 282,000 pounds were started into production. The May 31 inventory consisted of 127,000 pounds that were 100% complete with respect to materials and 70% complete with respect to conversion. The company uses the weighted-average method to account for units and costs. Determine the equivalent units of production for May for Materials as well as Conversion Cost. a. Equivalent units for Materials are 389,000 and for conversion cost are 338,900. b. Equivalent units for Materials are 338,900 and for conversion cost are 338,900. c. Equivalent units for Materials are 377,000 and for conversion cost are 338,900. d. Equivalent units for Materials are 377,000 and for conversion cost are 383,900.