What Is the Difference Between Police Human Relations and Police

What is the difference between police human relations and police public relations?

A) Human relations is about how one treats others; public relations attempts to create a favorable image of someone or some group.
B) Human relations is about creating a favorable image of oneself to another individual; public relations is about creating a favorable image of oneself to the general public.
C) There is no difference between human relations and public relations with regard to the police.
D) Police engage in public relations efforts, but not in human relations efforts.