The Behavior Therapies Include a Wide Range of Methods

The behavior therapies include a wide range of methods.Siev and Chambless' (2007) meta-analytic study of the effectiveness of relaxation training and cognitive therapy for generalized anxiety and panic disorders supports which of the following broad conclusion?

A) There is specificity of treatment to disorder.
B) Regardless of the disorder,all behavioral treatments work about the same.
C) Cognitive therapy is always better than other approaches.
D) Relaxation training works,but is less effective than other methods.