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': 'Which of the following segments are not removed in right hepatectomy \nSelect and explain. \nA. 4B, B. 5, C. 6, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ine right hepatectomy 5, 6, 7 and 8 segments are removed.', 'role': 'assistant'}]