A Soldier Served in Combat Zones in Iraq in 2010

A soldier served in combat zones in Iraq in 2010 and was deployed to Afghanistan in 2014. When is it most important for the nurse to screen for signs and symptoms of posttraumatic stress disorder (PTSD) ?

A) Immediately upon return to the United States from Afghanistan
B) Before departing Afghanistan to return to the United States
C) Two years after returning from Afghanistan
D) Screening should be ongoing