Which of the following statements about the capital asset pricing model​ (capm) is​ (are) correct?
a. the capm is a mathematical model that depicts the exact price that an investor should be willing to pay for any given investment.
b. the capm estimates the required rate of return on a stock held as part of a​ well-diversified portfolio.
c. in the​ capm, a​ stock's expected rate of return will depend on its diversifiable risk.
d. under the​ capm when the​ risk-free rate is​ 2% and the market risk premium is​ 5%, the expected return on a stock with a beta of 1.2 is​ 8%.