Severn Company uses the FIFO method in its process costing system. The following data were taken from the accounting records of the company for last month: Beginning Work in Process inventory ($52,000; materials 100% complete; labor and overhead 40% complete) 15,000 units Units started during the period 70,000 units Units completed during the period 80,000 units Ending Work in Process inventory (materials 100% complete; labor and overhead 80% complete) ? units Cost per equivalent unit: Materials Labor and Overhead $3.00 $1.25 The cost of the units in the ending Work in Process inventory is: a) $17,000. b) $20,000. c) $10,000. d) $22,500.