Steven Corporation uses the FIFO method in its process costing system. Department A's beginning work in process inventory consisted of 15,000 unit, 100% complete with respect to materials and 40% complete with respect to conversion costs. The total cost of this inventory was $31,000. A total of 40,000 units were transferred out during the month. The costs per equivalent unit were computed to be $1.30 for materials and $2.20 for conversion costs. What was the cost of the units completed and transferred out?
A. $140,000
B. $131,700
C. $138,300
D. $118,500