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': 'True about posttraumatic stress disorder -a) Recall of traumatic eventsb) Associated with major trauma like pelvic fracturec) Treatment is ECTd) Disturbed sleep \nSelect and explain. \nA. b, B. c, C. ad, D. ab', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]