A person is guilty of simple assault if he:
(a) Purposely or knowingly causes bodily injury or unprivileged physical contact to another; or
(b) Recklessly causes bodily injury to another; or
(c) Negligently causes bodily injury to another by means of a deadly weapon.
II. Simple assault is a misdemeanor unless committed in a fight entered into by mutual consent, in which case it is a violation.