Which of the Following Statements About the Effectiveness of Self-Help

Which of the following statements about the effectiveness of self-help groups is TRUE?

A) Self-help groups rarely help people with their problems.
B) Self-help groups make people feel better but usually make their psychological problems much worse.
C) Self-help groups can be just as effective as therapy provided by a mental health professional, at least for some psychological problems.
D) Except for Alcoholics Anonymous and Narcotics Anonymous, there is no evidence that self-help groups can actually improve people's psychological well-being or eliminate problem behaviors.