(a) An offender commits the crime of indecent exposure in the first degree if the offender violates AS 11.41.460
(a), the offense occurs within the observation of a person under 16 years of age, and


(1) while committing the act constituting the offense, the offender knowingly masturbates; or


(2) the offender has been previously convicted under


(A) this section;


(B) AS 11.41.460
(a); or


(C) a law or ordinance of this or another jurisdiction with elements similar to a crime listed under (A) or (B) of this paragraph.


(b) Indecent exposure in the first degree is a class C felony.