What Is the Irresistible Impulse Test

What is the irresistible impulse test?

A) a psychological test looking to measure impulse control
B) a test to see if a defendant is fit to stand trial
C) a legal test that hold people to be insane at the time they committed a crime if they were driven to do so by mental illness
D) a legal test that holds people to be insane at the time they committed a crime if they were driven to do so by an uncontrollable "fit of passion"