The following data for the month of April were taken from the cost records of Department A of International Semiconductor Inc. which uses process costing system: Opening inventory of work-in-process: Units 500 (with all materials added and 50% of labor and overhead) Costs Materials P3,600 Labor 2,250 Factory overhead 1,140 Put into production: Units 5,000 Costs Materials P37,650 Labor 29,070 Labor 29,070 Factory overhead 22,350 Completed and transferred - 4,800 units Ending inventory of work-in-process: Units - 700 (with all materials, and 60% of labor and overhead) The cost per equivalent unit is (FIFO): O 18.88 O 18.00 O 17.00 O 17.88