With reference to the Indian Constitution and its amendments, consider the following statements:
1. The 24th Constitution Amendment Act of 1971 affirmed the power of the Parliament to amend any part of the Constitution, including the Fundamental Rights, and made it mandatory for the President to provide assent to for such amendments.
2. The 61st Constitution Amendment Act of 1988 reduced the voting age for the Lok Sabha and State Legislative Assembly elections from 21 to 18 years, and the age of candidacy from 30 to 25.
3. The 74th Constitution Amendment Act of 1992 provided for the establishment of Municipalities in urban areas, including the constitution of Wards Committees, including the Scheduled Areas and tribal areas.
4. The 97th Constitution Amendment Act of 2011 introduced provisions related to cooperatives, including the formation of a State Co-operative Election Authority, but it mandated that the maximum number of directors of a co-operative society shall not exceed 25.
How many of the statements given above are correct?