Mazoon Company has information on its revenue and costs is as follows: Selling price per unit $175: Variable costs per unit includes: Direct material $60, Direct manufacturing labor $8. Manufacturing overhead $8, and Selling costs $10; Annual fixed costs $45,000. What is the contribution margin percentage? a. 50.9% e b. 56.6% Oc. None of the given answers e d. 61.1% e. 49.1%