Suppose there are three risky assets (A, B, and C), with volatilities of 40, 50 and 66.7%, respectively. a) If the assets returns are all uncorrelated, what are the weights of the minimum variance portfolio? b) If A is uncorrelated with B and C, but B and C have a correlation of -0.3, then what are the weights of the minimum variance portfolio? c) To help understand the difference in your answers to a) and b), recalculate the answers by first calculating the minimum variance portfolios of assets B and C, and then calculating the minimum variance portfolio of A with the B/C combination You can do this because B and C are both uncorrelated with A, so adding A to a portfolio of B and C does change the relative weights of the two.