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
Small vessel vasculitis is: 
Select and explain. 
A. Takayasu' arteritis, B. Poly arteritis nodosa, C. Kawasaki disease, D. Wegner's granulomotosis
D: Wegner's granulomotosis
Answer: D: Wegner's granulomotosis 
Explanation: (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