Ray Has the Diagnosis of Acute Stress Disorder; Bob Has

Ray has the diagnosis of acute stress disorder; Bob has been diagnosed as suffering from posttraumatic stress disorder. What is a major difference in their conditions?

A) Bob has had the symptoms for longer than Ray.
B) Ray's symptoms are the result of a social stressor, not a natural stressor.
C) Bob's symptoms involve a greater level of autonomic nervous system activation.
D) Ray is likely to have more trouble sleeping than Bob who is more likely to have appetite difficulties.