Why Would a Classical Criminologist Be Opposed to Keeping a Convicted

Why would a classical criminologist be opposed to keeping a convicted criminal's sentence secret from the public?

A) Without transparency, the public may lose faith in the government's ability to keep them safe.
B) The public needs to know that retribution has been achieved and justice has been served.
C) People need to know what punishment to expect if they commit a crime so that they can weigh the costs and benefits of engaging in criminality.
D) If the sentence is kept secret, people may believe the punishment is too harsh, and will lose trust in the government.