John Is Being Treated for PTSD Symptoms,which Began Shortly After

John is being treated for PTSD symptoms,which began shortly after his retirement from the military.He has had nightmares,flashbacks of traumatic events from combat,and episodes of acute anxiety.His wife is asking the nurse how he could be developing PTSD at this time when he hasn't been in a combat situation for over 10 years.Which of these teaching points are evidence-based pieces of information to share with John's wife? Select all that apply.

A) Retirement has been identified as a common precipitating factor for PTSD.
B) PTSD symptoms may develop at any time after a trauma.
C) PTSD is not the appropriate diagnosis, according to DSM-5, unless the trauma occurred greater than 5 years ago.
D) This is probably not PTSD but rather a brief adjustment reaction to retirement.