A. Create two separate datasets: the first dataset (dataset1) containing cars with 4 cylinders and 6 cylinders, and the second dataset (dataset2) containing cars with 4 cylinders and 8 cylinders. Then, apply a linear regression model to each dataset to compute the difference estimator (6-cylinders vs. 4-cylinders for dataset1, and 8-cylinders vs. 4-cylinders for dataset2). (7 points) Note: You may need to convert values in 'cyl' to categorical