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
All of the following are small vessels vasculitis, Except: 
Select and explain. 
A. Classical PAN, B. Wegner's granulomatosis, C. HSP, D. Churg Strauss Syndrome
A: Classical PAN
Answer: A: Classical PAN 
Explanation: Answer is A (Classical PAN): Classical PAN is a predominantly medium vessel vasculitis and not a small vessel vasculitis.