Suppose That You Have Noticed That Almost All of the Car

Suppose that you have noticed that almost all of the car dealers in your city are located along a three-block stretch of the same street. A likely reason for this clustering of car dealers is that:

A) the dealers are better able to form a cartel.
B) each dealer is attempting to locate closest to the customers.
C) there is a social norm in that city that dealers follow in choosing location.
D) each dealer sells a different brand of car, so they are not competitors and do not have to be concerned about the other dealers' locations.