the question asls to answer 3 parts. so A,B&C please

1. Answer three parts of the following question. Your answer for each part should be no longer than two pages long (a) How does the security market line differ from the capital market line? Explain your answer. (b) Compare and contrast the minimum variance frontier with the efficient frontier. Can it ever be the case that the minimum variance and efficient frontiers are the same? Explain your answer. (c) Compare and contrast Treynor and Sharpe performance measures. What Treynor and Sharpe performance measures. What is Sharpe's rationale for using standard deviation risk and not beta risk? Explain your answer. (d) What assumption of the CAPM is relaxed to develop the zero-beta portfolio model? Show algebraically that zero-beta portfolios plot on the inefficient frontier. (c) Hearth and Zaima (2004) conclude that "The multifactor APT model is more robust than the CAPM because if allows for several factors that may affect security returns and it avoids the need to identify a true market portfolio". Explain why you either agree/disagree with their assertion