Which of the following statements about operating leverage is false? O a. The degree of operating leverage is higher for companies with higher fixed costs O b. All of the given answers are true. O C. Keeping all factors constant, the higher the contribution margin, the lower the operating leverage. O d. Operating leverage measures how operating income will be affected by changes in sales If the degree of operating leverage higher for a company, this means that the company is more risky than another company with low degree of operating leverage. e