With reference to the concept of Liberty, consider the following statements:
1. Liberty means the absence of restraints on the activities of individuals.
2. Absolute liberty is provided for in the Fundamental Rights of the Constitution.
3. The right to liberty is protected under Article 21 of the Indian Constitution.
4. The concept of negative liberty focuses on self-mastery and self-realization, while positive liberty emphasizes on the absence of external constraints
How many of the statements given above are correct?