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': 'A22 year old male patient presents with compete rectal prolapse.\nThe surgery of choice is \nSelect and explain. \nA. Delormes procedure, B. Abdominal rectopexy, C. Altamaier rectopexy, D. Altamaier rectopexy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: For young pts - Abdominal rectopexy is preferred.\nFor old pts - perineal rectopexy is preferred (delormes, altamaier).\nUnderlying cause must be treated.', 'role': 'assistant'}]