What Was the Purpose of the Criminal Lunatics Act of 1800

What was the purpose of the Criminal Lunatics Act of 1800, which was subsequently incorporated into the Criminal Code of Canada in 1892?

A) It allowed people to use insanity as a defence.
B) It allowed the court to sentence people to a mental institution instead of prison.
C) It led to the development of separate sections within which institutions could separate the criminal from the non-criminal mentally insane.
D) It prevented the mentally ill from being sent to rehabilitation centres for this time period, although this was later changed so that the mentally ill now receive treatment instead of go to prison.