Using Your Knowledge of the Treatments for Constipation,explain to a Patient

Using your knowledge of the treatments for constipation,explain to a patient how laxatives and cathartics stimulate defecation.

A) Both laxatives and cathartics produce a mild, gentle stimulus for defecation.
B) Cathartics produce a mild, gentle stimulus for defecation, whereas laxatives produce a more intense action on the bowel.
C) Laxatives produce a mild, gentle stimulus for defecation, whereas cathartics produce a more intense action on the bowel.
D) Both laxatives and cathartics produce an intense action on the bowel, causing defecation.