What Is Most True About the Status of Therapy Effectiveness

What is most true about the status of therapy effectiveness?

A) Everyone agrees that therapy is very effective.
B) Most researchers believe therapy is effective, but there are a few critics who question its efficacy.
C) It's unlikely that therapy is effective.
D) There really hasn't been enough research on therapy to say whether it's effective.
E) Effectiveness is the top dog and ineffectiveness is the underdog.