Calculate the required rate of return for Climax Inc., assuming that (1) investors expect a 4.0% rate of inflation in the future, (2) the real risk-free rate is 3.0%, (3) the market risk premium is 5.0%, (4) the firm has a beta of 2.30, and (5) its realized rate of return has averaged 15.0% over the last 5 years. Do not round your intermediate calculations. a. 18.87% b. 18.5096 c. 16.28% d. 17.76% e. 20.91%