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: Psychiatry
Drug of choice for Narcolepsy 
Select and explain. 
A. Modafinil, B. Sildenafil, C. Disulfiram, D. Dexemedotimidine
A: Modafinil
Answer: A: Modafinil 
Explanation: Modafinil is a wakefullness promoting drug,used in the treatment of Narcolepsy.