Bob Is a Clerk Working the Night Shift at a Convenience

Bob is a clerk working the night shift at a convenience store.Late last month he was a victim of an armed robbery.Although he wasn't hurt, he now becomes frightened whenever a man comes into the store at night.Bob is also experiencing flashbacks, and has started having heart palpitations.He went to a doctor who referred him to a psychiatrist.His diagnosis was posttraumatic stress disorder.Which of the following terms best represents Bob's case?

A) physical-mental
B) mental-mental
C) mental-physical
D) physical-physical