In a prosecution for [Murder] [Murder of Unborn Child] while committing a crime in which the Defendant was not the only participant in the underlying crime, it is an affirmative defense that the Defendant:
1) did not commit the homicidal act or in any way solicit, command, induce, procure, counsel, or aid the commission thereof;
2) was not armed with a firearm, destructive device, dangerous weapon, or other weapon which under the circumstances indicated a readiness to inflict serious bodily injury;
3) reasonably believed that no other participant was armed with such a weapon; and
4) reasonably believed that no other participant intended to engage in conduct likely to result in death or serious bodily injury.
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NDCC NDCC 12.1-01-04