Are the following statements true or false? Give brief but precise explanations for your answers. (a) When the net supply of risky assets is positive, the CAPM predicts that the expected return on the market portfolio is always greater than the return on the riskless asset. (b) The CAPM predicts that a security with a beta of zero offers zero expected return. (c) The CAPM predicts that investors demand higher expected rates of return from stocks that are very sensitive to fluctuations in the stock market