Stanley's Bicycles store buys bicycles on average for S620 and sells them on average for $780. He pays a sales commission of 15% of sales revenue to his sales staff. Stanley pays $1,700 a month rent for his store, and also pays $4.000 a month to his staff in addition to the commissions. Stanley sold 150 bicycles in June. If Stanley prepares a contribution margin income statement for the month of June, what would be his operating income? O A. $8,300 O B. $750 O C. $117,000 O D. $110,550