(a) A person commits the crime of assault in the first degree if (1) that person recklessly causes serious physical injury to another by means of a dangerous instrument;
(2) with intent to cause serious physical injury to another, the person causes serious physical injury to any person;
(3) the person knowingly engages in conduct that results in serious physical injury to another under circumstances manifesting extreme indifference to the value of human life;
(4) that person recklessly causes serious physical injury to another by repeated assaults using a dangerous instrument, even if each assault individually does not cause serious physical injury; or
(5) that person knowingly causes another to become unconscious by means of a dangerous instrument; in this paragraph, “dangerous instrument” has the meaning given in AS 11.81.900(b)(16)(B) .
(b) Assault in the first degree is a class A felony.