This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypersensitivity, Subject name: Pathology
[{'content': 'Ram Devi presented with generalized edema sweating and flushing tachycardia and fever after bee sting. This is: \nSelect and explain. \nA. T cell mediated cytotoxicity, B. IgE mediated reaction, C. IgG mediated reaction, D. IgA mediated hypersensitivity reaction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The symptoms of the patient are due to hypersensitivity type I reaction Type I is mediated by IgE and it flairs up within minutes. The symptoms range form rashes to anaphylactic shock with vasodilation hypotension and bronchiolar spasm.', 'role': 'assistant'}]