If All Car Owners Sold Their Cars After Four Years,bought

If all car owners sold their cars after four years,bought new ones,sold those after four years,and so on,then

A) the used-car market would contain lower-than-average quality cars.
B) the used-car market would contain higher-than-average quality cars.
C) the demand for used cars would increase.
D) consumers would switch car brands less frequently.
E) the used-car market would contain average quality cars.