please help solve the below question.

Problem 3. (20 marks) Three firms in the same industry all sell their product at a price of $20 per unit. Their fixed cost and average variable cost are shown below: A B C Fixed cost $200 $500 $1,000 Average variable cost 15 10 5 (a) What is the breakeven output rate for each firm? (b) What is the profit elasticity for each firm at an output rate of 200? (c) Which firm is the most leveraged? Which firm is the least leveraged? (d) Which firm is facing highest risk? Which firm is facing the lowest risk