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: Unknown
[{'content': 'Chief artery of the lateral surface of the cerebral hemisphere - \nSelect and explain. \nA. Anterior cerebral artery, B. Posterior cerebral artery, C. Middle cerebral artery, D. Posterior inferior cerebellar artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans-B', 'role': 'assistant'}]