The Definition of a "Grass Eater" Officer According to the Knapp

The definition of a "grass eater" officer according to the Knapp Commission is

A) an officer who worked with a corrupt officer but did not turn them in.
B) an officer who assisted a corrupt officer but did not share in the profits.
C) an officer who passively accepted what is offered in terms of favors.
D) an officer who aggressively demands favors.