The correct answer is Disputes between different units of the Indian Union.

• The Supreme Court of India has Original, Appellate, and Advisory jurisdiction.
• Original Jurisdiction:
• As per Article 32, Supreme Court is the guardian/protector of fundamental right and any person whose fundamental rights are violated can directly approach the Supreme Court for a remedy and any matter regarding the enforcement of fundamental rights comes under the original jurisdiction of the supreme court.
  • The Supreme Court has original jurisdiction in a matter related between any dispute - 
    • Government of India vs and one or more states 
    • Government of India and states on one side and states on another side 
    • States vs states 

• Appellate Jurisdiction:
  • ​Supreme Court is the highest court of appeal from all courts in the territory of India.
  • Article 134 provides the Supreme Court with appellate jurisdiction in the criminal matters from any judgment, final order, or sentence of the high court.
• Advisory Jurisdiction:
  • Article 143 (Power of President to consult supreme court)
  • If the President feels that a question of law or fact has arisen or is likely to arise and the question is of such a nature of such public importance that it is expedient to obtain the opinion of the Supreme Court.
  • The Supreme Court is free to advise the President but such an opinion is not binding on the President.