What Does the Criminal Commitment Process Refer To

What does the criminal commitment process refer to?

A) People are not held because they have only been accused of a crime and are instructed to be treated by their own psychiatrists because they have already been previously diagnosed.
B) People are held because they have been accused of a crime and are detained in a mental health facility until they can be assessed as fit or unfit to stand trial or they have been found not criminally responsible on account of a mental disorder.
C) People are held because they have been found not criminally responsible on account of a mental disorder and have been convicted of a crime.
D) People are held because they have been convicted of a crime but are considered mentally ill and dangerous.