Consider the following multifactor APT model for a well-diversified portfolio, A: Factor Factor beta Inflation 1.2 GDP 0.6 Oil prices 0.2 Expected return on factor portfolio 14% 9% Assume the risk-free rate is 6%. a) If the expected return on portfolio A is 17%, what is the expected return on the factor portfolio for Inflation? b) Assume the realized return on portfolio A turned out to be 18%. If the expectations were fully realized with respect to GDP and oil prices, by how much were they off with respect to inflation? c) Assume portfolio A is underpriced and you have $1 million to do arbitrage. How would you create your arbitrage portfolio, A1, i.e. what are the components of A1, how many dollars would you invest in each component, and what positions would you take with A and A1?