This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Duration of action of flumazenil is \nSelect and explain. \nA. 5minute, B. 10minute, C. 20minute, D. 30minute', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Duration of action of flumazenil is 30-60min. So the best answer seems to be 30min The onset of action is about 1 to 2 minutes; 80% response is seen within the first 3 minutes. Peak effect is 6 to 10 minutes after administration.Duration range is from 19 minutes to 50 minutes as it depends on the dose was given and benzodiazepine plasma concentrations Ref: Goodman and Gilman 13th ed.', 'role': 'assistant'}]