How Did Raffaele Garofalo Explain His Observation That Many Criminals

Multiple Choice

How did Raffaele Garofalo explain his observation that many criminals had tattoos?

A) It was an example of how criminals refuse to obey norms.
B) It was evidence of criminals' higher pain tolerance.
C) Tattoos showed gang allegiance in prison.
D) Tattoos themselves were illegal, and so getting one was a permanent way of declaring oneself a criminal.