Mark Approaches a Therapist Complaining of Bad Bouts of Temper

Mark approaches a therapist complaining of bad bouts of temper.The therapist recommends that Mark keeps a diary of his thoughts before and after every episode.Then the therapist discusses these episodes with Mark and helps him develop new thinking patterns that are more positive,accurate,and effective in terms of abating his temper bouts.Which therapy did the therapist employ in Mark's case?

A) Client-centered therapy
B) Gestalt therapy
C) Rational-emotive behavior therapy
D) Cognitive-behavior therapy