The total market value of the equity of Okefenokee Condos is $4 million, and the total value of its debt is $1 million. The treasurer estimates that the beta of the stock currently is 0.5 and that the expected risk premium on the market is 8%. The Treasury bill rate is 4%, and investors believe that Okefenokee's debt is essentially 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 retum 8 % 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 6.75% c. Estimate the discount rate for an expansion of the company's present business. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Discount rate 6.75% d. Suppose the company wants to diversity into the manufacture of rose-colored glasses. The beta of optical manufacturers with no debt outstanding is 15. What is de required rate of return on Okefenokee's new venture? Do not round Intermediate calculations. Enter your answer as a whole percent.) Required rate of return %