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: ENT
[{'content': 'The usual location of glomus jugulare tumor is - \nSelect and explain. \nA. Epitympanum, B. Hypotympanum, C. Mastoid air cells, D. Internal auditory meatus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]