Please provide an answer with calculation. Thank you!

You have a portfolio with a standard deviation of 30% and an expected return of 18%. 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? Expected Return 15% 15% Standard Deviation 25% 20% Correlation with Your Portfolio's Returns 0.2 0.6 Stock A Stock B Standard deviation of the portfolio with stock Ais %. (Round to two decimal places.)