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': 'All are true about ramelteon except : \nSelect and explain. \nA. Agonist at MT1 and MT2 receptors, B. Is a substrate of CYP1A2, C. Has high addiction liability, D. Approved for treatment of insomnia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ramelteon is a non-addictive drug.', 'role': 'assistant'}]