Rally Tutoring Company is a student-owned and operated firm that provides tutoring services to college students at a location near campus. The company tutors students in mathematics, physics, biology, chemistry, and accounting, approximately 10% of the universit y's 6,000 students are enrolled in these courses. The firm offers one-hour tutoring sessions at $30 per session, and each client signs up for two sessions per week for the entirety of the 15 week semester. Advertising & Promotions $200 Supplies $1,000 Overhead $500 Tutor Wage/session $10 Campus Rep Incentive/session $4 What is the contribution margin of each session? 20.0% 46.6% 50.0% 53.3% 0 76.6%