Could you help me in solving this question, Doctor, as soon as possible, please, and thank you.

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? O a. 50.9% O b. 49.1% O c. 56.6% O d. 61.1% O e. None of the given answers