Question 21 (Marks: 2) You form a portfolio by investing $2,000 in stock A and $2,500 in stock B. The expected return for slock A is 9% while the expected return for stock B is 12%. The standard deviation for stock A is 14% and the standard deviation for stock B is 10%. The expected return and standard deviation for the market portfolio are 15% and 20%, respectively. The risk-free rate is 3%. The covariance between stock A and stock B is 0.01. Calculate the standard deviation of this portlolio. (Please retain at least 4 decimal places in your calculation and at least 2 decimal places in your final answer.) Select one: 3. 1.19% b. 10.91% c. 8.38% d. 0.70% e. 12.27% f. 11.78% B. 12.00% h. 12.51% 1. 12.15