A. If the complete referendum petition filed with the secretary of state is found to be insufficient, the secretary of state shall forthwith notify the sponsors in writing, through their designated agent, and shall set forth his reasons for so finding.
B. After delivery of such notice of insufficiency, the sponsors shall have thirty days in which:
(1) to solicit and obtain additional signatures;
(2) to submit proof to show that a rejected signature is valid and should be counted; or
(3) to make the petition more definite and certain.
C. Any amendment and correction to the referendum petition shall not materially change the purpose and effect of the petition, and no change shall be made in petition except to correct apparent typographical errors and omissions.
D. If no action is taken as prescribed in Subsection B of this section within the time limit prescribed, the petition for purposes of referral to the people at the general election is void.