(1) A person commits an offence if—
(a) he intentionally touches another person,
(b) the touching is sexual, and
(c) the other person is under 13.
(2) A person guilty of an offence under this section is liable—
(a) on summary conviction, to imprisonment for a term not exceeding 6 months or a fine not exceeding the statutory maximum or both;
(b) on conviction on indictment, to imprisonment for a term not exceeding 14 years.