Please help with below question

A portfolio is composed of two stocks, A and B. Stock A has a standard deviation of return of 20%, while stock B has a standard deviation of return of 15%. Stock A comprises 40% of the portfolio, while stock B comprises 60% of the portfolio. If the variance of return on the portfolio is .0210, the correlation coefficient between the returns on A and B is O 0.58 O 0.45 O -0.45 O 0.35 O -0.35