This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
The glomus tumour invasion of jugular bulb is diagnosed by 
Select and explain. 
A. Carotid angiography, B. Veebral venous venography, C. X-ray, D. Jugular venography
D: Jugular venography
Answer: D: Jugular venography 
Explanation: Jugular venography must be done to delineate multiple tumours, feeding vessels, embolization and involvement of jugular bulb, carotid aery or intradural extension. Ref: Dhingra 6th edition pg. 110