6. Sumter Corporation uses the weighted-average method in its process costing system. The following data pertain to operations in the first processing department for a recent month: CA Work in process, beginning: Units in process 6,000 Percent complete with respect to materials 60 % Percent complete with respect to conversion 20% Costs in the beginning inventory: I Materials cost $ 78,200 Conversion cost $ 3,600 Units started during the month ? Units completed and transferred out during the month 70,000 Costs added to production during the month: Materials cost $ 286,600 Conversion cost $ 216,000 Work in process, ending: Units in process 8,000 Percent complete with respect to materials 75% Percent complete with respect to conversion 25% How much cost, in total, was assigned to the units transferred out to the next department during the month? A) $549,500 B) S584,400 C) $502,600 D) $535,000