Which of the following statement/statements is/are correct?

(a) The operation of the doctrine of forum prorogation has not been envisaged under the UN Charter or the Statute of the International Court of Justice.

(b) The doctrine of Forum Prorogatum may not operate where the court already has jurisdiction ratione personae.

(c) The Doctrine of the Forum Prorogatum affords an informal way for a state to express consent to the jurisdiction of the court.

(d) The principle underlying doctrine of forum prorogatum was enunciated by the Permanent Court of International Justice in the Island of Palm is Case (1928).

Select the correct answer from the code given below :