Sussex Corporation uses a process costing system to manufacture laptop PCs. The following information summarizes operations for its VeryLite model during the quarter ending March 31, Year 1: (Click the icon to view the information.) Beginning work-in-process inventory was 40% complete for direct materials. Ending work-in-process inventory was 80% complete for direct materials. What were the equivalent units for direct materials for the quarter using the FIFO method? i X 1. 690 Data Table 2. 750 3. 554 4. 644 Direct Materials Units 150 $ 66,000 600 Work-in-process inventory, January 1 Started during the quarter Completed during the quarter Work-in-process inventory, March 31 Costs added during the quarter 520 230 850,000 Print Done