Using the same data set as Cars (A), create a multiple regression model to predict MSRP. This time, include the qualitative variables (Make/Model and Drive) as well as the quantitative ones. Try to maximize your adjusted R-square. This is a good time to learn how to use the Best Subsets feature in Minitab. Beware of multicollinearity! Refer back to the slides from Session 6, in which we showed that, for example, the "Volkswagen" dummy variable is itself a perfect combination of other variables. Even with Minitab, you'll need to control the set of predictor variables to avoid getting error messages