G Protein- Adenyl Cyclase Activity Has Been Shown, in Some

G protein- adenyl cyclase activity has been shown, in some cases, to be associated with certain diseases. In the case of cholera, which of the following is NOT correct?

A) Vibrio cholera bacteria colonize the gut.
B) Cholera toxin is secreted by Vibrio cholera bacteria.
C) The cholera toxin causes the cells of the gut to take in salts and fluids.
D) The toxin, by altering Gs, keeps intracellular cAMP levels high and doesn't allow them to decrease.
E) Cholera toxin alters Gs so that it no longer hydrolyzes GTP.