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': 'Mass in ear on touch bleeding heavily, cause is: \nSelect and explain. \nA. Glomus Jugulare, B. Ca mastoid, C. Acoustic neuroma, D. Angiofibroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A Glomus Jugulare The answer to this question is quite obvious as Glomus tumors are highly vascular tumors and bleed on Touch.', 'role': 'assistant'}]