With reference to the Electoral Bonds, consider the following statements:

1. Electoral bonds are purchased anonymously by donors and are valid for 30 days from the date of issue.

2. The bonds can be issued by any nationalized bank.

3. Only the political parties registered under Section 29A of the Representation of the People Act, 1951 are eligible to receive electoral bonds.

4. The aim of this scheme is to bring about transparency in the funding process of political parties.

Which of the statements given above are correct?