Calculate the required rate of return for Mercury Inc., assuming that investors expect a 5% rate of inflation in the future. The real risk-free rate is 3% and the market risk premium is 5%. Mercury has a beta of 2.0, and its realized rate of return has averaged 15% over the last 5 years. which is the procedure?

a.	18%
b.	20%
c.	15%
d.	17%
e.	16%