Which Statement About Research on Predicting Violence Is FALSE

Which statement about research on predicting violence is FALSE?

A) Early studies were undermined by not adjusting for the fact that only lower-risk violent offenders were released and followed as subjects.
B) Plea bargaining meant that many violent crimes were reduced to non-violent crimes in the databases.
C) Many previous studies did not distinguish between types of violence, targets of violence and the context of violence.
D) The poor predictive abilities of early studies suffered from the fact that only inmates who remained in prison were included.