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': '7th, 8th cranial nerve injury occurs in: \nSelect and explain. \nA. Anterior cranial fossa fracture., B. Middle cranial fossa fracture., C. Posterior cranial fossa fracture., D. None.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]