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': 'Flumazenil is - \nSelect and explain. \nA. Diazepam inverse agonist, B. Diazepam antagonist, C. Opioid antagonist, D. Opioid inverse agonist', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Diazepam antagonist", 'role': 'assistant'}]