According to a Chicago Study, Which Factors Enhance Public Perception

According to a Chicago study, which factors enhance public perception of the police?

A) Public perceptions of the police are enhanced when police officers are polite, fair, and attentive to citizens' needs and what citizens have to say.
B) Public perceptions of the police are enhanced when police officers give citizens clear directions when the citizens are placed under arrest.
C) Public perceptions of the police are enhanced when police officers limit use of force during an arrest.
D) Public perceptions of the police are enhanced when police officers are engaged in community-oriented policing strategies.