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: Skin
[{'content': 'Immediately after eating, a man develops swelling of face and lips, respiratory distress, intense pruiritis, hypotension and feeling of impending doom. The most likely diagnosis is \nSelect and explain. \nA. Angioneurotic Edema, B. Anaphylaxis, C. Myocardial Infarction, D. Food stuck in throat', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Anaphylaxis', 'role': 'assistant'}]