The following production data were taken from the records of the Finishing Department for July: Line Item Description Unit Inventory in process, June 1, 30% completed 6,000 units Transferred to finished goods during June 39,000 units Ending work in process during June, 25% completed 4,500 units Determine the total equivalent units for conversion costs, assuming that the first-in, first-out method is used to cost inventories. Assume that all direct materials are placed in process at the beginning of production. a. 39,000 units b. 37,500 units c. 38,325 units d. 43,500 units