In the Context of Sales Territory Routing Plans, the Cloverleaf

In the context of sales territory routing plans, the cloverleaf routing plan is best used when:

A) accounts are located in a straight line.
B) accounts are concentrated in different parts of the territory.
C) accounts are located in linear clusters that are some distance from one another.
D) accounts are held in major metropolitan areas.
E) accounts are highly concentrated with locations controlled by a grid of city blocks.