You have $200 invested in stock A with a beta of 1.5, $200 invested in stock B with a beta of 1.9, and $100 invested in stock C with a beta of 0.8. If the risk-free rate is 3% and the market risk premium is 7%, what should be the required return of the portfolio? 13.64% 9.08% 15.04% 14.20% What is the required return for a stock with a beta of 2 if the risk-free rate is 3% and the expected market return is 8%? 13% 16% 10% 19%