The Sterling Tire Company's income statement for 20X1 is as follows: a. Compute the degree of operating leverage. Note: Round your answer to 2 decimal places. b. Compute the degree of financial leverage. Note: Round your answer to 2 decimal places. c. Compute the degree of combined leverage. Note: Round your answer to 2 decimal places. d. Compute the break-even point in units. Note: Round your answer to the nearest whole number