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
derelation & depersonalisation seen in which type of disorder - 
Select and explain. 
A. Dissociative disorder, B. Personality disorders, C. Mania, D. None
A: Dissociative disorder
Answer: A: Dissociative disorder 
Explanation: None