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 psychoanalytic terms, obsessive compulsive disorder is fixed at : 
Select and explain. 
A. Oedipal stage, B. Genital stage, C. Oral stage, D. Anal stage
D: Anal stage
Answer: D: Anal stage 
Explanation: D. i.e. Anal stage