Kat Visited a Cognitive Psychologist to Deal with Issues Associated

Kat visited a cognitive psychologist to deal with issues associated with adjusting to her new job. Over the course of treatment, the therapist challenged Kat's patterns of negative thinking. Until this point, Kat never had been aware of just how distorted and irrational her thinking was. This realization triggered an episode of major depressive disorder. Kat's depression can be best described as a(n) :

A) dissociative fugue.
B) somatization disorder.
C) iatrogenic illness.
D) conversion disorder.