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: Radiology
[{'content': 'Angiographically, the typical "beaded" or "pile of plates" appearance involving the internal carotid aery is observed in: \nSelect and explain. \nA. Takayu\'s disease, B. Non-specific aoo-aeritis, C. Fibromuscular dysplasia, D. Rendu-Osler-Weber Disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Fibromuscular dysplasia', 'role': 'assistant'}]