Imo D
A very good question .
C is very tricky but we can eliminate it as we do not know how many mile passengers in each category traveled .
It might so happen that people who traveled by other means of transportation other than airplane end up spending more because their miles traveled were much more than the miles traveled by the people who traveled by airplane.
A very good question .
C is very tricky but we can eliminate it as we do not know how many mile passengers in each category traveled .
It might so happen that people who traveled by other means of transportation other than airplane end up spending more because their miles traveled were much more than the miles traveled by the people who traveled by airplane.










