A Natural Experiment in Predicting the Dangerousness of Juveniles Revealed

A natural experiment in predicting the dangerousness of juveniles revealed that

A) some prediction instruments are can effectively identify only high risk offenders
B) there were five true positives for every false positive
C) judges were remarkably inaccurate in identifying which juveniles were high risk and which were low risk
D) judges were reasonably accurate in identifying high risk juveniles at the expense of a high rate of false positives