Indian Polity · Polity

Consider the following statements regarding inter-State river water disputes in India: I. Parliament is empowered under the Constitution to provide for the adjudication of inter-State river water disputes and to exclude the jurisdiction of the Supreme Court in such matters. II. Tribunals constituted under the Inter-State River Water Disputes Act, 1956 are permanent constitutional bodies whose awards are recommendatory in nature. III. The Supreme Court can adjudicate the merits of inter-State river water disputes under its original jurisdiction once a tribunal is constituted. IV. Agreements entered into between States on inter-State rivers prior to the Constitution automatically lose their validity after the enactment of the Inter-State River Water Disputes Act, 1956. How many of the above statements are correct?