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: Pathology
Arthus reaction is what type of hypersensitivity reaction 
Select and explain. 
A. Localized immune complex, B. Ag-Ab reaction, C. Complement mediated, D. Ab mediated
A: Localized immune complex
Answer: A: Localized immune complex 
Explanation: The Arthus reaction is a localized area of tissue necrosis resulting from acute immune complex vasculitis, usually elicited in the skin. Revise the mnemonics “SHARP“ from the text.