Which of the Following Was Not Found in Research by Prati

Which of the following was not found in research by Prati & Pietrantoni (2009) regarding Italian police officers' perceptions of crowds?

A) Police officers distinguished between the majority of non-violent crowd members and a minority of trouble-makers.
B) Police officers do not perceive themselves as responsible for initiation or development of crowd violence.
C) Whether members are violent or not, police officers tend to view crowds as a homogeneous threat.
D) Violence was usually initiated by a few crowd members with violent tendencies.