To Have a Diagnosis of Irritable Bowel Syndrome (IBS) You

To have a diagnosis of irritable bowel syndrome (IBS) you must have which symptoms?

A) Pain, relieved by defaecation; pain associated with a change in the frequency of bowel movements; change in the form of the stool (loose, watery, or pellet-like)
B) Abdominal pain; changes in bowel movements-faeces may vary between solid and watery; periods of mild fever, sometimes with blood in the stools, and pain in the lower right abdomen
C) Loss of appetite; unintentional weight loss; boils and fistulas
D) About four stools daily, with or without blood; mild abdominal pain or cramping