By the 1970s, Research Began to Show Three of the Following

By the 1970s, research began to show three of the following findings. Which does NOT belong?

A) Unattended disorderly behavior in neighborhoods is a signal to more serious criminals that residents do not care what goes on in their community and that the criminals can move in and operate with impunity.
B) A rapid response to crime does not necessarily lead to more arrests.
C) Having more police officers using methods made popular under the professional or reform model does not significantly reduce crime.
D) Neighborhood-based policing projects had high success rates because of low costs, administrative efficiency, and high citizen interest.