13. Your portfolio contains stock A. You are contemplating adding another stock to your portfolio. You are considering five stocks--P, Q, R, S, T. These five stocks have the same expected return and same standard deviation. However, correlation (stated below) between each of the five stocks and A is different. If you are going to select one of these stocks, which one would be your best choice? a) b) P; because p (A&P) is.8 Q, because p (A&Q) is.9 S, because p (A&S) is - 1 T, because p (A&T) is. 1