If Your Friend Seems to Be a Good Candidate for Psychological

 If your friend seems to be a good candidate for psychological therapy,but is wondering if it would really be beneficial,you could tell your friend that ____. 

A) there has been no scientific research on this topic
B) most people receiving therapy gain nothing from it
C) most people receiving therapy benefit from it
D) about half of those receiving therapy benefit, and the other half do not benefit