Barker Company manufactures a product that passes through two processes. The following information is available for the first department for November: All materials are added at the beginning of the process. Beginning work in process consisted of 400 units that were 60% complete with respect to conversion. Ending work in process consisted of 1,000 units that were 10% complete with respect to conversion. During the month, 6,000 units were started in process. Using the weighted average method, the total equivalent units of production for materials is:

a.5,500.

b.5,400.

c.6,400.

d.6,000.