Standard deviation of the portfolio with stock A is ? %. (Round to two decimal places.)

Standard deviation of the portfolio with stock B is ? %. (Round to two decimal places.)

You have a portfolio with a standard deviation of 30% and an expected return of 16%. You are considering adding one of the two stocks in the following table. If after adding the stock you will have 20% of your money in the new stock and 80% of your money in your existing portfolio, which one should you add? \begin{tabular}{lccc} \hline & Expected Return & Standard Deviation & Correlation with Your Portfolio's Returns \\ \hline Stock A & 15% & 21% & 0.3 \\ Stock B & 15% & 19% & 0.6 \\ \hline \end{tabular}