Use this information about Department W to answer the question that follow. Department W had 2,400 units, one-third completed at the beginning of the period. 16,000 units were transferred to Department X from Department W during the period, and 1,800 units were one-half completed at the end of the period. Assume the completion ratios apply to direct materials and conversion costs. Determine the equivalent units of production used to compute the unit conversion cost on the cost of production report for Department W. Assume the company uses FIFO. Oa. 15,000 units Ob. 18,500 units c. 13,600 units od, 16,100 units