Power on the Go buys portable generators for $500 and sells them for $720. The company pays a sales commission of 5% of sales revenue to the sales staff. The company pays $7,000 a month rent for the store, and also pays $2,100 a month to staff in addition to the commissions. The company sold 400 generators in June. If the company prepares a contribution margin income statement for the month of June, what would be the contribution margin? A. $88,000 B. $73,600 OC. $288,000 OD. $214,400