Read the sentences below from the passage.

Instead of hiking up the rock in a straight line, the path has purposefully been formed into zigzags. Do not walk off of the path because that shows bad hiking etiquette and can be harmful to the hill.

This statement would become stronger by adding which of the following sentences?
A. Switchbacks are also called hairpin turns because of their resemblance to a bobby pin which is used in the hair.
B. Other hiking etiquette is to dispose of trash in personal backpacks if trash cans are nowhere to be found.
C. The zigzag pattern actually protects the hill from excessive erosion by keeping the trail at a consistent incline.
D. The switchbacks climb around 1000 feet in the first mile.