Sussex Corporation's production cycle starts in the Mixing Department. The following information is available for April: Units Work-in-process, April 30 (60% complete) 50,000 Total units in process during April 575,000 Work-in-process, April 1 (25% complete) 75,000 Materials are added at the beginning of the process in the Mixing Department. What are the equivalent units of production for the month of April, assuming Sussex uses the weighted-average method? Materials Conversion Costs a. 500,000 536,250 units b. 525,000 486,250 units c. 575,000 555,000 units d. 643,750 585,000 units