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: Psychiatry
Drug of choice in Obsessive compulsive disorder is - 
Select and explain. 
A. Imipramine, B. Fluoxetine, C. Alprazolam, D. Chlorpromazine
B: Fluoxetine
Answer: B: Fluoxetine 
Explanation: None