can you please find standard deviation of the portfolio with stock A & B

You have a portfolio with a standard deviation of 25% and an expected return of 19%. 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? Standard deviation of the portfolio with stock A is \%. (Round to two decimal places.)