All Shigellae Have Some Invasive Capability Limited to Mucosa of the Ileum

Multiple Choice

All Shigellae have some invasive capability limited to mucosa of the ileum and colon, but some Shigella dysenteriae strains cause more severe disease. Why?

A) They produce a toxin similar to enterohemorrhagic E. coli
B) These strains are motile
C) They have greater resistance to stomach acid
D) They produce a toxin similar to enterotoxic E. coli
E) They produce a capsule (Vi antigen)