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
Features of obsessive-compulsive neurosis are 
Select and explain. 
A. Repetitiveness, B. Irresistibility, C. Unpleasantness, D. All
D: All
Answer: D: All 
Explanation: A i.e. Repetetiveness; B i.e. Irresistibility; C i.e. Unpleasantness