You have a portolio with a standard deviabon of 29 and an expected retum of 19%. You are considering adding one of the two asocks in the following able. If aher add ng the stock you will hare. 25% of your money in the new slock and 75% of your meney in your existing portfolio, which one should you add? Standard deviation of the portfolo with stock A is 16. (Round so two decimal ploces.) Standard deviafon of the portfolio with stock B is W. (Round to two decimal ploces.) Which slock should you add and wty?? (Select the best choice below). A. Add B because the portfolio is less risky when B is added B. Add A bocause the portfolo is less riaky when A is addod C. Add either one because both portblios are equally risky