14. You are using the arbitrage pricing model to estimate the expected return on Bethlehem Steel and have derived the following estimates for the factor betas and risk premia: Factor Beta Risk premia (%) 1 2 3 4 5 1.2 0.6 1.5 2.2 0.5 2.5 1.5 1.0 0.8 1.2 a. Which risk factor is Bethlehem Steel most exposed to? Is there any way, within the arbitrage pricing model, to identify the risk factor? b. If the risk-free rate is 5%, estimate the expected return on Bethlehem Steel. . Now assume that the beta in the capital asset pricing model for Bethlehem Steel is 1.1 and that the risk premium for the market portfolio is 5%. Estimate the expected return, using the capital asset pricing model. d. Why are the expected returns different using the two models