This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
[{'content': 'In infants, defecation often follows a meal. The cause Gastroileal reflex of colonic contractions in this situation is \nSelect and explain. \nA. Gastroileal reflex, B. Enterogastric reflex, C. Increased circulating levels of GCR, D. Gastrocolic - reflex', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Gastrocolic reflex refers to the contraction of colon induced by entry of food into the stomach. This reflex results in an urge to defaecate after a meal. Because of this, defaecation after meals is a rule in children.However, in adults, the bowel training suppresses this reflex. Ref: Medical physiology, Indu Khurana', 'role': 'assistant'}]