Which of the following is a difference between a circular routing pattern and the leapfrog routing pattern?

A$.$ A circular routing pattern moves across different parts of the territory in a series of circular loops, whereas the leapfrog routing pattern covers the territory in an equilateral triangle.

B$.$ A circular routing pattern proceeds in a clockwise direction, whereas the leapfrog routing pattern proceeds in an anticlockwise direction.

C$.$ A circular routing pattern is best applied when a territory is large, whereas the leapfrog routing pattern is best applied when a territory is small.

D$.$ A circular routing pattern is best used in urban areas, whereas the leapfrog routing pattern is best used in rural areas.

E$.$ A circular pattern is best used when accounts are evenly dispersed across the territory, whereas the leapfrog routing pattern is best used when accounts are clustered into several widely dispersed groups.