"sexual penetration"
includes any act which causes penetration to any extent whatsoever by—
(a) | the genital organs of one person into or beyond the genital organs, anus, or mouth of another person; |
(b) | any other part of the body of one person or, any object, including any part of the body of an animal, into or beyond the genital organs or anus of another person; or |
(c) | the genital organs of an animal, into or beyond the mouth of another person, |
and "sexually penetrates" has a corresponding meaning;