4). Stocks A and B has the following historical returns: Year Probability Stock A's Returns (%) Stock B's Returns (%) 2003 0.1 (18.00) (24) 2004 0.2 44 24 2005 0.4 (22) 2006 0.2 22 8 2007 0.1 34 56 a. Calculate the expected return for each stock during the 5-year period. b. Calculate the standard deviation of returns for each stock. c. Calculate the coefficient of variation for each stock. d. If you are a risk-averse investor, would you prefer to hold Stock A or Stock B