Juvenile crime in your city is at an all time high. You're a crime analyst for the local police, and they need you to determine if there's a link to juvenile offending and victimization. In addition, you need to provide some strategies on reducing the level of juvenile crimes. You're most likely to use data from which two instruments?
a. Census and unemployment surveys
b. UCR and NCVS
c. DVS and NIBRS
d. Self-report surveys and NYS