The Westphalian Idea of the Sovereign Equality of Member States

The Westphalian idea of the sovereign equality of member states is

A) the basis for the structure of the UN Security Council.
B) the basis for each state's having one vote in the UN General Assembly.
C) the basis for the veto power of the five permanent members of the Security Council.
D) the basis for the weighted voting system used by the World Bank and the International Monetary Fund.
E) the basis for the role for certain states in the UN budget negotiations.