The World Bank Classifies Nations as Low Income,lower Middle Income,upper

The World Bank classifies nations as low income,lower middle income,upper middle income,or high income based on gross national income (GNI) that reflects the average annual per-person income in those nations.Why might sociologists find this form of classification problematic?

A) The number is an average of incomes in a country,and it can mask inequality within a specific nation.
B) Making cross-national comparisons of income ignores the role of culture in making some groups used to poverty.
C) Too many people lie about their incomes to make the number useful.
D) Global economic comparisons need to take into account the mode of production in every given nation.