Why should "cap and trade" schemes to regulate carbon emissions be extended from within countries to allow trade among countries?
A) The marginal benefit of emissions may differ across countries.
B) To equalize the marginal benefit of emissions across countries.
C) The marginal cost of emissions may differ across countries.
D) a and b.
E) b and c.

Question

Quizplus · Accepted Answer

The marginal benefit of emissions may differ across countries, and to equalize the marginal benefit of emissions across countries.

Why Should "Cap and Trade" Schemes to Regulate Carbon Emissions