This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pathology
[{'content': 'Medium size arterial disease is - \nSelect and explain. \nA. Temporal areritis, B. Wegners granulomatosis, C. Classic PAN, D. Takayasu arteritis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Classic PAN a) Large vessel vasculitis: Giant cell arteritis (temporal arteritis), Takayasu arteritis, Cogan syndrome.b) Medium vessel vasculitis: PAN (classical PAN), kawasaki disease, Buerger's disease.c) Small vessel vasculitis: HSP, Wegner's granulomatosis, microscopic polyangitis, churg strauss syndrome, Cryoglobulinemia, SLE, idiopathic crescentic glomerulonephritis, Bechet's syndrome, renal limited vasculitis", 'role': 'assistant'}]