What Would Be a Likely Impact If Harsh Restrictions Were

What would be a likely impact if harsh restrictions were imposed on global greenhouse gas emissions? (A typical proposal is that all countries agree to roll back their CO₂ emissions to 1990 levels.)

A) Developing nations would have a competitive advantage over industrialized nations.
B) The industrialization of developing nations would be nearly halted.
C) The standard of living of all nations would increase dramatically.
D) Air pollution from non-greenhouse gases would increase.
E) It would result in global energy shortages.