Upon the indictment for penetrative sexual abuse of a child [ or young person] or sexual intercourse with a young person under 17 years of age, the accused person may be convicted of–

(a) penetrative sexual abuse of a person with a mental impairment;

(ab) penetrative sexual abuse of a child [ or young person] by a person in a position of authority;

(b) indecent act with or directed at a child [ or young person] by a person in a position of authority;

(ba) indecent assault of child [ or young person] by a person in a position of authority;

(c) indecent assault; or

(d) assault.

(e) .  .  .  .  .  .  .  .