(a) A person commits the crime of assault of an unborn child in the first degree if
(1) that person recklessly causes serious physical injury to an unborn child by means of a dangerous instrument;
(2) with intent to cause serious physical injury to an unborn child or to another person, that person causes serious physical injury to an unborn child;
(3) that person knowingly engages in conduct that results in serious physical injury to an unborn child under circumstances manifesting extreme indifference to the value of human life; for purposes of this paragraph, a pregnant woman's decision to remain in a relationship in which domestic violence, as defined in AS 18.66.990, has occurred does not constitute conduct manifesting an extreme indifference to the value of human life; or
(4) that person recklessly causes serious physical injury to an unborn child by repeated assaults using a dangerous instrument, even if each assault individually does not cause serious physical injury.
(b) Assault of an unborn child in the first degree is a class A felony.