Consider the following statements:

1. IThe Preamble was enacted before the enactment of the entire Constitution.
2. IIThe Preamble is a part of the Constitution but has no legal effect independently of other parts.
3. IIIIt is enforceable through Courts of Law.
4. IVThe Objective Resolution by Jawaharlal Nehru finally became the foundation for the Preamble.

Which of the statements given above are incorrect?