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 of the following are true about sedatives & hypnotics except 
Select and explain. 
A. Ramelton is a melatonin antagonist used to treat jet lag, B. Thiopentone is contraindicated in porphyrias, C. Midazolam is the shortest acting Benzodiazepine, D. Suvorexant is Orexin receptor antagonist used in insomnia
A: Ramelton is a melatonin antagonist used to treat jet lag
Answer: A: Ramelton is a melatonin antagonist used to treat jet lag 
Explanation: Melatonin is secreted by pineal gland in darkness, which acts on Melatonin 1 & Melatonin 2 receptors to induce sleep.
Ramelton is a Melatonin receptor agonist used for sleep induction in Jet lag.