With reference to Justice K.S. Puttaswamy vs Union of India judgement (2017) of the Supreme Court, which of the statements given below is/are correct?
1. It declared right to privacy as a fundamental right under Article 21 of the Constitution.
2. It laid down a test of proportionality to determine the reasonableness of the invasion of privacy.
3. It upheld the validity of the Aadhaar Act of 2016.