Your client has $97,000 invested in stock A. She would like to build a two-stock portfolio by investing another $97,000 in either stock B or C. She wants a portfolio with an expected return of at least 15.0% and as low a risk as possible, but the standard deviation must be no more than 40%. What do you advise her to do, and what we the portfolio expected return and standard deviation? The expected return of the portfolio with stock B is %. (Round to one decimal place.)