Question: With reference to the 'Collegium System' of the Supreme Court, consider the following statements:

1. The current structure of the Collegium was determined through the 'Third Judges Case' (1998), comprising the CJI and four other senior-most judges of the Supreme Court.
2. If two judges of the Collegium give an adverse opinion on a name, the Chief Justice of India (CJI) shall not send that recommendation to the Government.
3. The Supreme Court declared the 99th Constitutional Amendment (NJAC) unconstitutional because it violated the principle of 'Independence of the Judiciary.'
4. The Collegium system is explicitly mentioned in Article 124 of the original text of the Indian Constitution.

Which of the statements given above are correct?