Which of the Following Is an Element of Multilateralism

Which of the following is an element of multilateralism?

A) All multilateral organizations are ever-vigilant checks and balances to superpowers like the US.
B) The World Bank has been the most prominent multilateral entity since World War II.
C) It is intended to resolve international differences and conflicts.
D) The parties to a dispute are always granted equal voices in decision-making.
E) It protects core countries from irrelevant discussions at the periphery.