The total market value of Okefenokee Real Estate Companys equity is $6 million, and the total value of its debt is $4 million. The treasurer estimates that the beta of the stock currently is 2.0 and that the expected risk premium on the market is 5%. The Treasury bill rate is 3%, and investors believe that Okefenokee's debt is essentialy free of default risk. a. What is the required rate of return on Okefenokee stock? (Do not round intermediate calculations. Enter your answer as a whole percent.) Required rate of return % b. Estimate the WACC assuming a tax rate of 20%. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) WACC % c. Estimate the discount rate for an expansion of the companys present business. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Discount rate % d. Suppose the company wants to diversify into the manufacture of rose-colored glasses. The beta of optical manufacturers with no debt outstanding is 2.2. What is the required rate of return on Okefenokees new venture? (You should assume that the risky project will not enable the firm to issue any additional debt.) (Do not round intermediate calculations. Enter your answer as a whole percent.)