Sentence of imprisonment for offenses against children, elder persons, or handicapped persons

(1) Notwithstanding section 706-669, if not subjected to an extended term of imprisonment pursuant to section 706-662, a person shall be sentenced to a mandatory minimum term of imprisonment without possibility of parole as provided in subsection (2) if: (a) The person, in the course of committing or attempting to commit a felony, causes the death or inflicts serious or substantial bodily injury upon another person who is: (i) Sixty years of age or older; (ii) Blind, a paraplegic, or a quadriplegic; or (iii) Eight years of age or younger; and (b) Such disability is known or reasonably should be known to the defendant. (2) The term of imprisonment for a person sentenced pursuant to subsection (1) shall be as follows: (a) For murder in the second degree--fifteen years; (b) For a class A felony--six years, eight months; (c) For a class B felony--three years, four months; (d) For a class C felony--one year, eight months.