(3) Any person who inflicts upon a child physical injury or, having the care or custody of such child, causes or permits another to inflict physical injury upon a child is guilty of an offense as follows:
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(a) if done intentionally or knowingly, the offense is a class A misdemeanor;
(b) if done recklessly, the offense is a class B misdemeanor; or
(c) if done with criminal negligence, the offense is a class C misdemeanor.