A major result of the Insanity Defense Reform Act was

a) to require that a documented, preexisting mental condition exist at the time of a crime in order to use an insanity defense.
b) to clarify what specific crimes may be associated with insanity.
c) to restrict the insanity defense to multiple offenders.
d) to eliminate the irresistible impulse as a plausible insanity defense.

d