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': 'For young pts - Abdominal rectopexy is preferred. For old pts - perineal rectopexy is preferred(delormes, altamaier).\nUnderlying cause must be treated \nSelect and explain. \nA. 1st degree, B. 2nd degree, C. 3rd degree, D. 4thdegree', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bleeding PR with prolapse which is managed by manual reduction is\n3rd degree\n1st- bleeding only.\n2nd\xa0Bleeding PR with prolapse with spontaneous reduction.\n3rd Bleeding PR with prolapse which is managed by manualreduction.\n4th\xa0Bleeding PR with prolapse which is permanent.', 'role': 'assistant'}]