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Problem 11-25 Portfolio Returns and Deviations [LO 1, 2]Consider the following information on a portfolio of threestocks:State ofProbability ofStock AStock BStock CEconomyState of EconomyRate of ReturnRate of ReturnRate of ReturnBoom.15.02.32.60Normal.55.10.12.20Bust.30.16?.11?.35a. If your portfolio is invested 40 percenteach in A and B and 20 percent in C, what is the portfolio’sexpected return, the variance, and the standard deviation?(Do not round intermediate calculations. Round yourvariance answer to 5 decimal places, e.g., 32.16161. Enter yourother answers as a percent rounded to 2 decimal places, e.g.,32.16.) Expected return% Variance Standard deviation%b. If the expected T-bill rate is 3.75 percent,what is the expected risk premium on the portfolio? (Do notround intermediate calculations and enter your answer as a percentrounded to 2 decimal places, e.g., 32.16.)Expected risk premium %