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 for OCD 
Select and explain. 
A. Fluoxetine, B. Imipramine, C. Diazepam, D. Haloperidol
A: Fluoxetine
Answer: A: Fluoxetine 
Explanation: A i.e. Fluoxitine