need help on both please

preferred stock is currently 5SO, what is the coet of proferred stock? 23% 30% 25% 15% 20% Which of the following statements is CORRECT? According to the CAPM, a stock's standard deviation is more relevant as a measure of risk to an investor with a well-diversified portfolio than to an investor who holds only that one stock. A stock's beta is less relevant as a measure of risk to an investor with a well-diversified portfolio than to an investor who holds only that one stock. According to the CAPM, if an investor holds market portfolio, he or she can, through diversification. eliminate all of the diversifiable risk inherent in owning stocks. According to the CAPM, stocks with higher standard deviations of returns will have higher expected returns