In Referring to the "Invention of Juvenile Delinquency," Agnew and Brezina

In referring to the "invention of juvenile delinquency," Agnew and Brezina are pointing out that:

A) delinquent acts were less common in the past
B) juvenile offenders were ignored in the past
C) we now view and treat juvenile offenders differently than in the past
D) all of the above