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': 'Night mares are seen in \nSelect and explain. \nA. Adjustment disorder, B. Post Traumatic stress disorder, C. Dissociation, D. Obsessive compulsive disorder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Patient with post traumatic stress disorder experiences dreams about trauma called as "nightmares".', 'role': 'assistant'}]