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
Following are the drugs used in alcohol dependence to prevent relapse ? 
Select and explain. 
A. Fluoxetine, B. Nalmefene, C. Acamprosate, D. Topiramate
A: Fluoxetine
Answer: A: Fluoxetine 
Explanation: Ans. is 'a' i.e., Fluoxetine