<prompt> ROME III criteria for Irritable bowel syndrome AEImprovement with defectionRectal bleedingOnset associated with change in frequency of stoolOnset associated with change in form of stool  <response>: Answer- B. Rectal bleedingROME II Diagnostic Criteria for Functional Bowel Disorders-Irritable Bowel SyndromeFunctional Abdominal BloatingFunctional ConstipationFunctional DiarrheaUnspecifed Functional Bowel Disorder 