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': "Segment I of the liver is known as: \nSelect and explain. \nA. Quadrate lobe, B. Caudate lobe, C. Riedel's lobe, D. Left lobe", 'role': 'user'}, {'content': "Answer: B \nExplanation: Most surgeons still refer to segment I as the caudate lobe, rather than segment I. Ref: Schwaz's principle of surgery 9th edition, chapter 31.", 'role': 'assistant'}]