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: Medicine
[{'content': 'Which of the following is a feature of temporal aeritis \nSelect and explain. \nA. Giant cell aeritis, B. Granulomatous vasculitis, C. Necrotizing vasculitis, D. Leucocytoclastic vasculitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Giant cell aeritis', 'role': 'assistant'}]