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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 60% of the portfolio, while stock B comprises 40% of the portfolio. If the variance of return on the portfolio is 0.030, the correlation coefficient between the returns on A and B is Multigle Choice 0.833 0.500 0.333 0.125