This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
[{'content': "Small vessel vasculitis is: \nSelect and explain. \nA. Takayasu' arteritis, B. Poly arteritis nodosa, C. Kawasaki disease, D. Wegner's granulomotosis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: (Wegner\'s granulomatosis) (2002-H 16th) (743-CMDT-2009)PRIMARY VASCULITIDES(A) Predominantly large - vessel vasculatides* Takayasu\' arteritis* Giant cell arteritis (Temporal arteritis)* Behcet\'s disease(B) Predominantly medium-vessel vasculitide* Polyarteritis nodosa* Buerger\'s disease(C) Predominintly small cell vasculitidesImmune complex mediated"ANCA-associated" disorders* Cutaneous leukocytoclastic angitis (Hypersensitivity vasculitis)* Henoch-Schonlein purpura* Essential cryoglobulinemia* Wegener\'s granulomatosis* Microscopic polyangiitis* Churg strauss syndrome', 'role': 'assistant'}]