According to chapter 2 in the text which of the following is true ?

A. The boundary between rich and poor countries has become clearer in 1990s
B. The fastest growing countries must be the ones with the highest per capita GNP
C. A few poor countries like South Korea and Malaysia in the 1950s grew much more rapidly than some higher-income countries like Uruguay and New Zealand
D. Today all high and Upper-middle income countries are Western.