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
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 
Select and explain. 
A. Angioneurotic Edema, B. Anaphylaxis, C. Myocardial Infarction, D. Food stuck in throat
B: Anaphylaxis
Answer: B: Anaphylaxis 
Explanation: B. i.e. Anaphylaxis