What is a fundamental difference between neighborhood watch programs and community policing?

A. Neighborhood watch programs require citizens to take the law into their own hands, as does a community policing program.
B. Neighborhood watch programs rely on citizens reporting suspicious activity, while community policing places police officers within the community to serve as visible symbols of law enforcement.
C. The neighborhood watch program relies on neighbors knowing one another, while the community policing program only works if neighbors are essentially strangers to one another.
D. Neighborhood watch always provides rewards for reporting crimes, while community policing carries no reward.