(1) A person shall not be liable under section 30 if he voluntarily

1.  gives up the attempt to induce another to commit a felony and averts

any existing danger that the other may commit the offence;

2.  after having declared his willingness to commit a felony, gives up his plan; or

3.  after having agreed to commit a felony or accepted the offer of another to commit a felony prevents the commission of the offence.

(2) If the offence is not completed regardless of his actions or if it is committed independently of his previous conduct, his voluntary and earnest effort to prevent the completion of the offence shall suffice for exemption from liability.