Schrute Farm Sales buys portable generators for $470 and sells them for $750 He pays a sales commission of 5% of sales revenue to his sales staff. Mr. Schrute pays $6000 a month rent for his store, and also pays $1800 a month to his staff in addition to the commissions. Mr. Schrute sold 600 generators in June. If Mr. Schrute prepares a contribution margin income statement for the month of June, what would be his operating income? Select one: A. $304,500 B. $450,000 C. $153,300 D. $137,700