Warren Industries uses a process-costing system for its single product, which is manufactured from Material X and Material Y. X and Y are introduced to the product as follows: Material X: Added at the beginning of manufacturing Material Y: Added at the 75% stage of completion The company started and completed 77,000 units during the period, and had an ending work-in-process inventory amounting to 16,700 units, 15% complete. Which of the following choices correctly expresses the total equivalent units of production for Material X and Material Y? Material X Material Y A. 89,525 79,505 B. 89,525 89,525 C. 93,700 77,000 D. 93,700 79,505 E. 93,700 89,525