Correct Option: A

Subsequent to the rulings in the Three Judges Cases (1982, 1993, 1998), the President has to appoint judges who have been chosen by the Supreme Court’s collegium — a closed group comprising the Chief Justice of India and the four senior most associate judges of the court.
Note : It is the President that administers oath to the Chief Justice of India. In the absence of the President, the Vice President can administer oath to CJI. Recently, Justice JS Khehar sworn in as the 44th Chief Justice of India