Calculate the required rate of return for Mercury Inc., assuming that investors expect a 3.2 percent rate of inflation in the future. The real risk-free rate is equal to 3.7 percent and the market risk premium is 5.7 percent. Mercury has a beta of 0.8, and its realized rate of return has averaged 16 percent over the last 5 years. 11.46% 11.96% 12.46% 12.96% 13.46%