When Describing the IMF Broad Country Classification, the Most Accurate

When describing the IMF broad country classification, the most accurate statement is that

A) about 50 per cent of the world's population lives in the advanced economies and the other 50 per cent lives in the emerging market and developing economies.
B) most of the nations in Western Europe are considered emerging market economies.
C) most of the world's population lives in advanced economies.
D) the category with the greatest number of countries is the advanced economies.
E) the emerging market economies are countries that were, until the early 1990s, part of the Soviet Union or its satellites.