Quantitative Reviews of Cognitive Therapy for Generalized Anxiety Disorder and Social

Quantitative reviews of cognitive therapy for generalized anxiety disorder and social phobia have shown:

A) treatment effects are rarely maintained beyond one month post-treatment.
B) treatment effects are maintained at one-month but not six-month follow-up.
C) treatment effects are maintained or increase at both one- and six-month follow-ups.
D) treatment effects of cognitive therapy is consistently greater than for behavioral treatments.