Standard Deviation of Stock B as well please.

Very confused

You have a portfolio with a standard deviation of 22% and an expected return of 20%. You are considering adding one of the two stocks in the following table. If after adding the stock you will have 25% of your money in the new stock and 75% of your money in your oxisting portfolio, which one should you add? Standard deviation of the portfolio with stock A is \%. (Round to two decimal places.)