You have a portfolio with a standard deviation of 21% and an expected return of 19%. You are considering adding one of the two shares in the table below. If after adding the shares you will have 30% of your money in the new shares and 70% of your money in your existing portfolio, which one should you add? Expected return 14% 14% Standard deviation 23% 17% Correlation with your portfolio's returns 0.4 0.6 Share A Share B Standard deviation of the portfolio with share A is 4%. (Round to two decimal places.) Standard deviation of the portfolio with share B is 4%. (Round to two decimal places.) Which share should you add and why? (Select the best choice below.) A. Add B because the portfolio is less risky when B is added. O B. Add A since the portfolio is less risky when A is added