Michenne Was Giving a Presentation to Her Class When Suddenly

Multiple Choice

Michenne was giving a presentation to her class when suddenly the roof collapsed.Michenne was not injured herself,but she watched helplessly as her classmates were pinned under mounds of rubble.She saw horrific injuries,and several of her classmates were killed in the accident.If Michenne develops symptoms of a mental disorder,what disorder is it most likely to be

A)  post-traumatic stress disorder 
B)  panic disorder 
C)  nonspecific phobia disorder 
D)  generalized anxiety disorder