Ramona Was Mugged at Gunpoint in a Dark Parking Lot

Ramona was mugged at gunpoint in a dark parking lot after work two nights ago. She is constantly re-experiencing the event through images, dreams, thoughts, and flashbacks. She finds herself avoiding situations that might make her think about the trauma, but she is still so anxious that she cannot concentrate or sleep. Ramona is likely suffering from

A) obsessive-compulsive disorder.
B) post-traumatic stress disorder.
C) acute stress disorder.
D) panic disorder.