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: Anatomy
[{'content': 'Treatment of CBD stones include all except \nSelect and explain. \nA. Endoscopic papillotomy, B. ERCP, C. Choledochotomy, D. Ursodeoxycholic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Treatment of CBD stones ERCP Laparoscopic CBD exploration Open CBD exploration Ref: Sabiston 20th edition Pgno :1494', 'role': 'assistant'}]