9. Toby's Farm Store buys portable generators for $500 and sells them for $800. He pays a sales commission of 5% of sales revenue to his sales staff. Toby pays $2,000 a month rent for his store, and also pays $1,800 a month to his staff in addition to the commissions. Toby sold 200 generators in June. If Toby prepares a contribution margin income statement for the month of June, what would be his contribution margin? A. $268,000 B. $160,000 C. $52,000 D. $108,000