This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Procedures - Cholecystectomy, Bile Duct Exploration, Store Extraction, Subject name: Surgery
[{'content': 'Choledochotomy is- \nSelect and explain. \nA. Removal of bile duct, B. Opening of CBD, C. Opening of cystic duct, D. Removal of cystic duct', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Opening of CBDo "Choledocho " - CBDo "Otomy " - Making an opening in', 'role': 'assistant'}]