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': 'Inverse agonist of BZD \nSelect and explain. \nA. Beta-carboline, B. Bicuculine, C. Baclofen, D. Diazepam', 'role': 'user'}, {'content': 'Answer: A \nExplanation: beta carboline is an inverse agonist of BDZ .', 'role': 'assistant'}]