This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Flumazenilis \nSelect and explain. \nA. Benzodiazepine antagonist, B. Benzodiazepine agonist, C. Melatonin receptor agonist, D. GABA analogue', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Benzodiazepine antagonist) (399-KDT6th)* Flumazenil - Benzodiazepine antagonistUses - (i) To reverse BZD anaesthesia (ii) BZD overdose* Melatonin receptor agonist - Ramelteon', 'role': 'assistant'}]