The Marshall Company has a process cost system. All materials are added when the process is first begun. At the beginning of September, there were no units of product in process. During September 50,000 units were started; 5,000 of these were still in process at the end of September and were 3/5 finished. The equivalent unitsof material in September were:

A. 40.000

B. 45,000

C. 48,000

D. 50,000