Servix, Inc., produces water pumps. Each water pump contains a small valve that costs S5. During May, 600 valves were drawn from the supply room and installed in water pumps in the production process. Eighty percent of these units were completed and transferred into finished goods warehouses. Of the units completed, thirty percent were still unsold at the end of the month. There were no beginning inventories. 25. The cost of valves in work in process at the end of May would be: A) $2,400 B) $3,000 C) S600 D) S720 26. The cost of valves in cost of goods sold for May would be: A) S1,680 B) $2,100 C) $900 D) S720