In General, the Evaluation of Suicide Prevention Centers' Effectiveness Indicates

In general, the evaluation of suicide prevention centers' effectiveness indicates that ____.

A) nearly half of all adolescents who commit suicide call a hot line first, indicating that the prevention centers are ineffective
B) for the vast majority of callers, they are very helpful
C) although they may not stop every suicide, callers feel that the centers provide more help than their friends
D) although immediate mental health service is lacking, it is possible that they help