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
In OCD treatment is based on: 
Select and explain. 
A. Serotonergic receptor, B. Dopaminergic receptor, C. NA receptor receptor, D. Glutamate receptor
A: Serotonergic receptor
Answer: A: Serotonergic receptor 
Explanation: A. i.e. Serotonin receptor