Which Is the Best Definition of the "Dark Figure" of Crime

Which is the best definition of the "dark figure" of crime?

A) Crimes that are not prosecuted.
B) Criminal reports that have been misfiled by law enforcement personnel.
C) Crimes that have been falsely reported by people trying to take advantage of the criminal justice system.
D) Crimes that do not come to the attention of the criminal justice system.
E) None of the above.