Which of the Following Statements Is Correct

Which of the following statements is correct?

A) GDP per capita is a good measure for determining which countries are rich (developed) and which are poor (developing) .
B) GDP per capita is the same as GDP according to purchasing power parity.
C) GDP per capita is the best way to determine the overall size of a country's economy relative to other countries.
D) GDP per capita is not a factor taken into account in determining the Human Development Index.
E) GDP per capita is a good measure for determining how environmentally sustainable a country's economy is.