At the beginning of the recent period, there were 900 units of product in a department, one-third completed. These units were finished and an additional 5,000 units were started and completed during the period. 800 units were still in process at the end of the period, one-fourth completed. The equivalent units produced by the department were: A) 6,700 units. B) 5,900 units. C) 5,800 units. D) 5,500 units. E) 8,500 units.