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
[{'content': 'Which is not a type HI hypersensitivity reaction \nSelect and explain. \nA. TB, B. Rheumatoid ahritis, C. SIF, D. Ahus reaction', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Tuberculosis Tuberculosis is a delayed hypersensitivity or type IV hypersensitivity reaction.", 'role': 'assistant'}]