The World Bank Divides Middle-Income Economies into Lower-Middle Income and Upper-Middle

The World Bank divides middle-income economies into lower-middle income and upper-middle income.Bolivia,Cameron,China,Ecuador,Egypt,India,Indonesia,Iraq,Pakistan,Thailand,and Vietnam are classified as:

A) high-income countries
B) upper-middle-income countries
C) lower-middle-income countries
D) low-income countries