Which of the Following Statements Expresses the Greatest Challenge Facing

Which of the following statements expresses the greatest challenge facing Gestalt therapy?

A) Gestalt therapy is so popular with clients that there is a severe shortage of appropriately trained Gestalt psychotherapists.
B) The general therapeutic community still tends to identify Gestalt therapy with the way Fritz Perls practiced and wrote 40 years ago.
C) Gestalt therapy is always a long-term therapy and therefore is not financially attainable to many in our society.
D) The Gestalt approach has been so integrated with other approaches that it is not able to maintain an identity of its own.
E) There has been a great deal of research conducted on the effectiveness of Gestalt therapy, but to this date none unequivocally support its use.