Which Symptom Reported by an Adult Patient,who Was Sexually Abused

Which symptom reported by an adult patient,who was sexually abused as a child,reflects the diagnosis of posttraumatic stress disorder (PTSD) ?

A) A history of substance abuse
B) Refusing to go to public places from which escape may be difficult
C) Seeking advice and guidance prior to making any significant decision
D) Ruminating easily concerning the abuse with friends and acquaintances