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
[{'content': 'A feeling of detachment from self and feeling of being an external observer of his body is suggestive of: \nSelect and explain. \nA. Dissociative fugue, B. Dissociative identity disorder, C. Depersonalization, D. Trance', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Depersonalization / Derealisation is a type of dissociative disorder where patient feels detached from himself and world. He feels as if he is an external observer of his body.', 'role': 'assistant'}]