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
Which of the following drugs are used for smoking cessation ? 
Select and explain. 
A. Bupropion, B. Buspirone, C. Venlafaxine, D. Fluoxetine
A: Bupropion
Answer: A: Bupropion 
Explanation: None