This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Pharmacology), Subject name: Pharmacology
[{'content': 'Which one of the following is a Benzodizapine Antagonist? \nSelect and explain. \nA. Flumazenil, B. Methadone, C. Atropine, D. Naloxone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Flumazenil # Flumazenil, a 1,4-imidazobenzodiazepine, is an antagonist that can reduce or terminate benzodiazepine effects in a dose-dependent manner.> Antagonist acts by the competitive inhibition of benzodiazepines at their central nervous system receptor sites> Naloxone is an opioid antagonist> Methadone is a synthetic opioid used medically as an analgesic and as a maintenance antiaddictive for use in patients with opioid dependence.', 'role': 'assistant'}]