please explain how to get 12%

Q12. 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 stock risk premium is 5.0%, 10.29% 10.83% u Answered 11.40% rrect Answer 12.00%