Department M had 600 units 60% completed in process at the beginning of June, 6,000 units completed during June, and 700 units 30% completed at the end of June. Using the first-in, first-out method of inventory costing, the number of equivaient units of production for conversion costs for the periods OB. 6,700 units Ob. 5.850 units Oc. 5.640 units Od. 7.300 units