This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Ahus reaction is what type of hypersensitivity reaction \nSelect and explain. \nA. Localized immune complex, B. Ag- Ab reaction, C. Complement mediated, D. Ab mediated', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ahus reaction Localized area of tissue necrosis resulting from acute immune complex vasculitis, usually elicited in the skin. "SHARP" S- Serum sickness, Schick test, SLE H- HS pneumonitis (Farmers lung), HSP A- Ahus reaction R- Reactive ahritis, RA, Raji assay P - PAN, PSGN', 'role': 'assistant'}]