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
True about posttraumatic stress disorder -a) Recall of traumatic eventsb) Associated with major trauma like pelvic fracturec) Treatment is ECTd) Disturbed sleep 
Select and explain. 
A. b, B. c, C. ad, D. ab
C: ad
Answer: C: ad 
Explanation: None