Consider the following statements regarding the election of the President of India:

1. If the Supreme Court declares a Presidential election void, all official acts performed by that person as President before the declaration automatically become invalid.

2. The election to fill a vacancy in the office of President must be postponed if some State Legislative Assemblies stand dissolved at the time.

3. The Constitution prescribes a fixed time limit within which the President must give assent to a Bill passed by Parliament.

How many of the above statements are correct?