Which of the Following Statements About Mitigation of Climate Change

Which of the following statements about mitigation of climate change is NOT true?

A) The most direct way to slow the increase in greenhouse gases is to minimize population growth.
B) Conservation is an expensive way to reduce carbon output used in power production.
C) If the real costs of burning coal are included, the cost of wind energy is similar.
D) Injecting several megatons of sulfur dioxide into the atmosphere annually could block some of the sun's incoming energy.
E) There is considerable opposition to a carbon tax in the United States.