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A portfollo is composed of two stocks, A and B. Stock A has a standard deviation of return of 35%, while stock 8 has a standard deviation of return of 15%. The correlation coefficient between the returns on A and B is,55. Stock A comprises 40 s of the portfolio, while stock 8 comprises 60% of the portfolio, The standard devition of the return on this portfolio is 236 20.39% 18.45% 17.67%