Now suppose the net returns of the three stocks are given by table2 Stock u d A 10% 20% B 20% 10% C 15% 15% Table 2: The net returns of the stocks. (a) Let FA and fc be the net returns of stocks A and C respectively. Can you find a random variable ž such that ƒÂ = c + 2 and E[2] = 0?

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