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': 'Glomus tumor invading the veical pa of carotid canal. It is ? \nSelect and explain. \nA. Type B, B. Type CI, C. Type C2, D. Type C3', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is `c' i.e., Type C2", 'role': 'assistant'}]