Some Economists Warn That,even If the Population Stabilizes,the Environmental Impact

Some economists warn that,even if the population stabilizes,the environmental impact per person is likely to increase.Which is the best explanation for why would that happen?

A) The middle class will continue to grow and per person consumption will increase.
B) The upper class will increase its consumption to preserve its advantages.
C) Historic use of natural resources has created a tipping point that will necessitate higher consumption to maintain current living standards.
D) The working class will be essentially excluded from the economy and will be forced into less advanced methods of production.
E) Governments will seek to maintain growth by encouraging ecologically risky strategies.