Sec. 25. ELECTION; ADOPTION WITHOUT ELECTION. The city is authorized to call an election to determine if the city desires to adopt this Act after a petition has been presented to the governing body of the city, signed by five per cent (5%) of the qualified voters of the city who voted in the last municipal election. Such election must be advertised by publication in at least one (1) newspaper of general circulation in said city once each week for four (4) consecutive weeks. The question shall be submitted to the qualified voters of the city at a special election to be held for such purpose at which all ballots shall have printed thereon:

"FOR: The proposed Police Pension System."

"AGAINST: The proposed Police Pension System."

No other issues shall be joined with the proposition submitted at this election on the same ballot except as provided in Subsection (f), Section 3 of this Act.

Nothing herein is to prevent the city governing body from adopting the proposed pension plan without an election.