The Shaping Department started the month with a beginning Work in Process inventory of $15,000. During the month, it was assigned the following costs: direct materials, $120,000; direct labor, $40,000; overhead allocated at the rate of 20% of direct labor cost. Inventory with a cost of $160,000 was transferred to finished goods. What was the ending balance of Work in Process inventory for the department?

A. $8,000

B. $23,000

C. $168,000

D. $183,000