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 glomus tumor invasion of jugular bulb is diagnosed by \nSelect and explain. \nA. Carotid angiography, B. Veebral venousvenography, C. X-ray, D. Jugular venography', 'role': 'user'}, {'content': 'Answer: D \nExplanation: MRI - gives soft tissue extent of tumor; Magnetic Resonance Angiography (MRA) shows compression of the carotid aery whereas magnetic resonance venography shows invasion of jugular bulb by the tumor.', 'role': 'assistant'}]