24. Amr has $50,000 to invest and has decided to invest $10,000 in the stock of ABC and the rest in YUL. The standard deviation of the returns of ABC is 8% while the standard deviation for YUL is 14%. He is happy to see that the correlation between the two stocks is negative and is -0.15 . The standard deviation of the portfolio is closest to: A) 11.07% B) 11.19% C) 11.31% D) 11.55% E) Cannot be determined, we need the covariance between the two stocks