Rental Cars, Though Important in the U.S., Are

Multiple Choice

Rental cars, though important in the U.S., are:

A) usually rented in a package with air travel.
B) found at most large city airports but not at mid-sized or smaller ones.
C) one of the few forms of transportation having a small, slow growth.
D) mainly owned by a few very large companies like Hertz and Avis.
E) None of the above.