This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pharmacology
[{'content': 'Which of the following drugs are used for smoking cessation? \nSelect and explain. \nA. Bupropion, B. Buspirone, C. Venlafaxine, D. Fluoxetine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (A) Bupropion(Ref: Harrison 16th/e p2575; Katzung 11th/e p521,1110)Drugs used for smoking cessation are:Nicotine (gum, patch, nasal inhaler, oral inhaler)BupropionClonidine (oral, patch)NortriptylineRimonabantVarenicillineAmfebutamoneMecamylamine', 'role': 'assistant'}]