For a given very large car dataset, the first six rows of data are the following:

and the corresponding correlation analysis output for the whole dataset is as follows:

1. What kind of problem is this correlation output showing?

2. If you were forced to pick the BEST TWO out of the five independent variables for regression analysis, which ones would you select based on their correlation coefficients? Choose from these five combinations:

A. CITY MPG and COMBINED MPG

B. HIGHWAY MPG and NUMB CYL

C. CITY MPG and NUMB CYL

D. HIGHWAY MPG and CITY MPG

E. HIGHWAY MPG and COMBINED MPG