7 . The standard deviations of returns for Stocks A and Bare to percent and i6 percent respectively . If we have a portfolio with Go percent of our funds in stock A and 41 percent in stock B what is the standard deviation for this portfolio given the correlation coefficient is a .37 2 8 8 percent . 9 . 6 percent C . 10 percent . 124 percent e . 13 6 percent