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
All are true about ramelteon except : 
Select and explain. 
A. Agonist at MT1 and MT2 receptors, B. Is a substrate of CYP1A2, C. Has high addiction liability, D. Approved for treatment of insomnia
C: Has high addiction liability
Answer: C: Has high addiction liability 
Explanation: Ramelteon is a non-addictive drug.