You are evaluating two stocks: X and Y. Stock X has an expected return of 26.00% and a standard deviation of 26.00%. Stock Y has an expected return of 19.00% and a standard deviation of 21.00%. The stocks have a coefficient of correlation of 0.52. What is the standard deviation of a portfolio with equal amount invested in each stock? a. 16.71% b. 20.52% c. 11.72% d. 18.71% e. 23.73% No e