(1) A person is guilty of an offense if it is committed by his own conduct or by the conduct of another person for which he is legally accountable, or both.

  (2) A person is legally accountable for the conduct of another person when:

    (a) acting with the kind of culpability that is sufficient for the commission of the offense, he causes an innocent or irresponsible person to engage in such conduct;  or

    (b) he is made accountable for the conduct of such other person by the Code or by the law defining the offense;  or

    (c) he is an accomplice of such other person in the commission of the offense.

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