5) [8 Points] Consider two stocks: A and B. The expected returns of stocks A and B are 5% and 15% respectively. The standard deviations of stocks A and B are 15% and 30% respectively. The correlation coefficient between the returns of stocks A and B is 0.5. You construct a portfolio P that consists of 70% stock A and 30% stock B. a) [1 Point Calculate the expected return of portfolio P. b) 12 Points Calculate the standard deviation of portfolio P. c) [1 Points] State the value of the correlation coefficient between the returns of stocks A and B that would result in the lowest standard deviation of portfolio P. d) [4 Points Explain the difference between unique risk and market risk. Explain how an investor can maintain the same level of expected return and reduce their exposure to unique risk