A stock will have a loss of 14.5 percent in a recession, a return of 13.2 percent in a normal economy, and a return of 27.9 percent in a boom. There is 24 percent probability of a recession, 27 percent probability of normal economy, and 49 percent probability of boom. What is the standard deviation of the stock's returns? Multiple Choice 17.02% 12.77% 14.59% 28.97% 15.60%