Which of the Following Is FALSE

Which of the following is FALSE?

A) Most of the world's population lives in countries classified as low- or lower-middle income.
B) All labor and environmental conditions improve with income growth.
C) Percentage wise, more children work in low-income countries than in higher income countries.
D) With such large income differences internationally, it is not surprising that there are very large differences in most social, economic, and environmental indicators.