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Assume that t-bills generates a return of 2 %. Which of the following risky portfolios is the optimal risky portfolio? Now assume that you wish to have a total expected return on your portfolio of 4 %, how much of your funds should be invested in the optimal risky portfolio, and how much in t-bills, respectively? Portfolio A Portfolio B Portfolio C9% E(r) 11% 12% 26 % 31% 25 %