Clostridium Difficile Can Be a Particularly Dangerous Bacterium Because

Clostridium difficile can be a particularly dangerous bacterium because

A) it produces exospores with a particularly resilient cell wall.
B) it has resistance to ampicillin and kanamycin.
C) it mutates rapidly.
D) it produces endospores, a toxin and has inherent antibiotic resistance.
E) it produces exospores, a low pH resistant toxin and can accept multiple plasmids.