Most of Those Youngsters Who Become Involved in Gangs _____

Most of those youngsters who become involved in gangs _____ .

A) are taking part in delinquent activities prior to their involvement
B) display higher levels of delinquency after becoming involved than before
C) remain involved in their gang for less than one year
D) display higher levels of delinquency after becoming involved than before and remain involved in their gang for less than one year
E) all of these