variances as well

You have a portfolio with a standard deviation of 24% and an expected retum of 17%. You are considering adding one of the two stocks in the following table. If after adding the stock you will have 30% of your money in the new stock and 70% of your money in your existing portfolio, which one should you add? 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.)