Studies Have Suggested That Re-Experiencing a Traumatic Event Can Become

Studies have suggested that re-experiencing a traumatic event can become an addiction of sorts.The evidence suggests that the reason for this is:

A) People with PTSD often have addictive personalities.
B) Perpetuating the traumatic experience yields secondary gains.
C) The re-experiencing of trauma enhances production of endogenous opioid peptides.
D) People with PTSD often have concurrent substance abuse issues.