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
Behaviour therapy is useful in: 
Select and explain. 
A. Panic attack, B. OCD, C. Personality disorder, D. All
D: All
Answer: D: All 
Explanation: A. i.e. Panic attack B. i.e. OCD; C. i.e. Personality disorder