Decker Corporation Decker Corporation has the following information for May: Beginning Work in Process Inventory (75% complete as to conversion) 7,500 units Started 27,000 units Ending Work in Process Inventory (15% complete as to conversion) 9,400 units Beginning WIP Inventory Costs: Material $25,500 Conversion 52,725 Current Period Costs: Material $34,300 Conversion 80,845 All material is added at the start of the process and all finished products are transferred out. Refer to Decker Corporation. Assume that FIFO process costing is used. What is the cost per equivalent unit for conversion? Select one: a. $3.87 b. $6.40 C. $3.05 d. $4.25