This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Recurrent obstruction, mass per rectum and diarrhoea in child - \nSelect and explain. \nA. Intussusception, B. Rectal prolapse, C. Internal hernia, D. Haemorrhoids', 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer is 'a' i.e. Intussusception Although I could not find any documented evidence of diarrhoea in Intussusception, the given picture goes with intussusception only. Intussusception has been seen to complicate cases of gastroenteritis (Nelson 17/e p1242). Probably this can explain the diarrhoea.", 'role': 'assistant'}]