20) Which of the following statements about the Capital Asset Pricing Model (CAPM) is most correct?

In the stock market line (SML), if all other conditions are the same and the expected return of the market portfolio increases, the equilibrium return of stocks with B much greater than 1 will rise, but the equilibrium return of stocks with B greater than 0 but very less than 1 will be goes down Investment weights for risk-free assets and market portfolios on the capital market line (CML) are objective, but the investment ratio for market portfolios is subjective. The slope of the stock market line (SML) always has a constant value regardless of the B value. A portfolio on the capital market line (CML) is efficient, so its beta is 0. The correlation coefficient between the portfolio on the capital market line (CML) and the market portfolio is 0.