The expected value and the standard deviation of returns for asset A is . (See below.) Asset A Possible Outcomes Probability Returns (%) Pessimistic Most likely Optimistic 0.25 0.45 0.30 10 12 18 O A. 12.7 percent and 2.3 percent OB. 12 percent and 3.2 percent O C. 12.7 percent and 4 percent OD. 13.3 percent and 3.2 percent