Waterproof Roofing Company has provided the following information: Sales revenue Variable costs Fixed costs $778,000 506,000 218,000 Which of the following statements is true, if the sales volume increases by 14%? O A. Fixed expenses will increase by $30,520. OB. Operating income will increase by $70,840. OC. Operating income will increase by $38,080. OD. Contribution margin will increase by $108,920