(1) For purposes of this section “minor” means a person who is 16 years of age or older, but younger than 18 years of age, at the time the sexual conduct described in this section occurred.

(2) A person commits unlawful sexual conduct with a minor if, under circumstances not amounting o rape, in violation of Section 27-5-402, object rape, in violation of Section 76-5-402.2, forcible sodomy, in violation of Section 76-5-403, or aggravated sexual assault, in violation of Section 76-5-405, the actor is ten or more years older than the minor at the time of the sexual conduct:

     (a) has sexual intercourse with the minor;

     (b) engages in any sexual act with the minor involving the genitals of one person and the mouth or anus of another person, regardless of the sex of either participant; or

     (c) causes the penetration, however slight, of the genital or anal opening of the minor by any foreign object,  substance, instrument, or device, including a part of the human body, with the intent to cause substantial emotional or bodily pain to any person or with the intent to arouse or gratify the sexual desire of any person, regardless of the sex of any participant.