What Was the Basis for the Irresistible Impulse Test Used

What was the basis for the irresistible impulse test used in the late 19th century?

A) the legal assumption that everyone knows right from wrong
B) the finding that the M'Naghten test was too broad
C) the finding that even though some people intellectually know that their behavior is illegal they still can't control their behavior
D) the observation that some diagnoses are based on evidence of criminal behavior