In the Story Alice in Wonderland, the Dodo Bird Declares

In the story Alice in Wonderland, the dodo bird declares at the end of a race, "Everyone has won and all must have prizes." The "dodo bird verdict" has been offered to describe the relative effectiveness of different forms of psychotherapy, best summarized as __________.

A) only therapies that deal with the underlying cause of the problem can be effective
B) clients who come to a therapist with a hostile attitude are less likely to be helped than those who come with a positive attitude
C) the differences between the effectiveness of various psychotherapies are very slight or nonexistent
D) therapies that force the client to confront personal problems are the most effective