Correct Option: B

The Supreme Court has exclusive original jurisdiction over any dispute between the Government of India and one or more States or between the Government of India and any State or States on one side and one or more States on the other or between two or more States, if and insofar as the dispute involves any question (whether of law or of fact) on which the existence or extent of a legal right depend. In this capacity, it serves as the federal court of India.