one multiple choice

A portfolio is composed of two stocks, A and B. Stock A has a standard deviation of return of 19%, while stock B has a standard deviation of return of 25%. Stock A comprises 70% of the portfolio, while stock B comprises 30% of the portfolio. If the variance of return on the portfolio is .034, the correlation coefficient between the returns on A and B is _____. .536 .375 .161 .134