What Is the Association of Helicobacter Pylori in the Digestive

What is the association of Helicobacter pylori in the digestive system?

A) This is the major infectious cause of diarrhea.
B) Most ulcers are due to stomach infection with this bacteria.
C) This is the causative agent of "strep throat."
D) This species of bacteria is the main cause of the odor of feces.
E) This species of bacteria converts roughage into vitamin D.