Mark Is a Former Group Therapy Client Who Has Entered

Multiple Choice

Mark is a former group therapy client who has entered a new group not as a client per se,but as a model for other clients to follow.According to research on modeling in psychotherapy (for example,Yalom,1995) ,this practice is likely to benefit

A) Mark, but not the clients in the group.
B) the clients in the group, but not Mark.
C) both Mark and the clients in the group.
D) neither Mark nor the clients in the group.