Which Statement Is False About How Abdominal Pain Is Produced

Which statement is false about how abdominal pain is produced?

A) Chemical mediators,such as histamine,bradykinin,and serotonin produce abdominal pain.
B) Edema and vascular congestion produce abdominal pain by stretching.
C) Ischemia caused by distention of bowel obstruction or mesenteric vessel thrombosis produce abdominal pain.
D) Low concentrations of anaerobes,such as streptococci,lactobacilli,staphylococci,enterobacteria,and Bacteroides,produce abdominal pain.