Which of the Following Is a Key Advantage of Group

Which of the following is a key advantage of group therapy?

A) The therapist can observe how a client actually interacts with others.
B) It is easier to monitor a client's progress when the therapist can compare the client to others with the same problem.
C) Group therapy is a better environment in which to demonstrate unconditional positive regard.
D) Group therapy can be effectively used with groups of up to fifty or more clients simultaneously.