All of the Following Pertain to Clostridium Difficile Infection Except

All of the following pertain to Clostridium difficile infection except it

A) is due to ingestion of contaminated,improperly stored,cooked meats and gravies.
B) is a colitis that is a superinfection.
C) often has an endogenous source.
D) is associated with disruption of normal flora due to broad-spectrum antimicrobials.
E) is the major cause of diarrhea in hospitals.