In a Study of Three Groups of Patients Suffering from Generalized

In a study of three groups of patients suffering from generalized anxiety disorder - one group receiving no treatment,one group receiving behavioral treatment,and one group receiving psychodynamic treatment - which group showed the most improvement after treatment was completed?

A) The two experimental groups showed approximately the same amount of improvement, which in both cases was greater than the improvement shown by members of the control group.
B) The experimental group that received behavioral treatment.
C) The experimental group that received psychodynamic treatment.
D) The control group that received no treatment