Question 35 1 pts The returns of two stocks, A and B, over the past five years are shown below. At the beginning of every year, you keep 30% of your investment in stock A and 70% in stock B. Compute the standard deviation of the returns of your portfolio. Year 12345 A B 38% 0% -1% 3% 24% -18% -3% 1% 1% -8% O 6.88% O 3.28% O 11.55% O 18.27% O 15.96%