10. The Assembly Department started the month with 38,000 units in its beginning work in process inventory. An additional 492,000 units were transferred in from the prior department during the month to begin processing in the Assembly Department. There were 28,000 units in the ending work in process inventory of the Assembly Department. How many units were transferred to the next processing department during the month?

A) 507,000

B) 473,000

C) 471,000

D) 502,000