Jamal, an analyst at Graffiti Computers (GC), models the company's stock assuming that all stocks' returns depend on only three risk factors: inflation, industrial production, and the aggregate degree of risk aversion. The risk-free rate is RF-596, the return on the market is rM-796, and the rest of the available data is given in the following table Variable The required rate of return on an inflation portfolio, r The required return on an industrial production portfolio, r2 The required return on a risk-bearing portfolio, r3 Factor sensitivity to the inflation portfolio, b1 Factor sensitivity to the industrial production portfolio, b2 Factor sensitivity to the risk-bearing portfolio, b3 Graffiti Computers's beta, bGc Value 15% 10% 4% 0.4 -0.6 0.9 0.65 Using the APT model, Jamal calculates that GC's required rate of return is