Zee adds direct materials when the process is 70% complete. If Zee had 500 units, 60% completed, in process at the beginning of the period, 6,000 units were completed and transferred during the period, and 600 units were 30% completed at the end of the period, what was the number of equivalent units of Direct Material for the period using FIFO?

Select one:

a. 6,180

b. 6,500

c. 6,680

d. 6,000