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: Anatomy
[{'content': 'Which is not a boundary of calot triangle \nSelect and explain. \nA. Common hepatic duct, B. Cystic duct, C. Right lobe of liver, D. Gall bladder', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Gall bladder', 'role': 'assistant'}]