It costs Homer's Manufacturing $0.95 to produce baseballs and Homer sells them for $8.00 a piece. Homer pays a sales commission of 5% of sales revenue to his sales staff. Homer also pays $13,000 a month rent for his factory and store, and also pays $79,000 a month to his staff in addition to the commissions. Homer sold 72,500 baseballs in June. If Homer prepares a contribution margin income statement for the month of June, what would be his contribution margin? A. $580,000 B. $511,125 C. $97,875 D. $482,125