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
Drugs used in alcohol withdrawal are all, except: 
Select and explain. 
A. Naltrexone, B. Naloxone, C. Acamprosate, D. Disulfiram
B: Naloxone
Answer: B: Naloxone 
Explanation: Naloxone is used to block the action of endogenous opioid peptides. All the others are used for alcohol withdrawal. Ref KD Tripathi 8th ed.