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: Pharmacology
[{'content': 'A 70-year-old man was administered penicillin intravenously. Within 5 minutes, he developed generalized uicaria, swelling of lips, hypotension and bronchospasm. The first choice of treatment is to administer - \nSelect and explain. \nA. Chlorpheniramine injection, B. Epinephrine injection, C. High dose hydrocoisone tablet, D. Nebulized salbutamol', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Epinephrine injection Generalized uicaria, swelling of lips, hypotension and bronchospasm within 5 minutes of taking penicillin suggest the diagnosis of anaphylactic type of hypersensitivity. Epienephrine (S.C./i.m.) is DOC for anaphylactic shock.", 'role': 'assistant'}]