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
The drug acamprosate is therapeutically used for: 
Select and explain. 
A. Cough, B. Rickets, C. Thrombolysis, D. Maintenance therapy of alcohol abstinence
D: Maintenance therapy of alcohol abstinence
Answer: D: Maintenance therapy of alcohol abstinence 
Explanation: None