4. Assume that a risk-free government bond has a yield of 6% and the expected return on the market portfolio is 12%. Using the capital asset pricing model. a. Draw a security market line. b. What is the risk premium on the market? c. What is the required return that an investor should demand for an investment with a of 1.25? d. A CAPM investor requires a return of 9.6% from a stock, what is the implied of the stock