Which of the following statement is/are correct about, the European organization for nuclear Research (CERN)?

1. CERN is the world’s largest nuclear and Particle physics laboratory.

2. India became on “Observer” Member of CERN in 2016.

3. CERN is based in Geneva on the French- Swiss Border.

4. After becoming observer member, India has to contribute a certain amount of money.

Choose the correct statement