Susan Is in the First Stage of Selye's General Adaptation

Susan is in the first stage of Selye's General Adaptation Syndrome; which of the following is most likely occurring?

A) Her heart and respiration rates have slowed down and her muscles have become fatigued. She has developed hives all over her upper torso.
B) Her endocrine and sympathetic activity is above normal, but lower than in the alarm stage.
C) Her hypothalamus is secreting corticotrophin-releasing hormones, which in turn cause her pituitary gland to secrete cortisol.
D) Her body has been activated and she is experiencing a fight or flight reaction.