When the data for all seven sites in the Esbensen et al. (2013) study were analyzed, there were ______.
A) several differences found which supported gang affiliation as the root cause of violent offending between the experimental and control group students
B) no differences in violent offending between the experimental and control group students over the 4-year period
C) very few differences in the groups over the 6-year period
D) findings to suggest that students who participated in the G.R.E.A.T. program were more likely to become members of gangs