Which of the Following Statements Best Describes the United States

Which of the following statements best describes the United States' approach to global warming?

A) The United States was an early leader in the campaign to reduce global warming.
B) The United States has boycotted goods produced in countries that have signed international agreements to which it opposes.
C) The United States has been unwilling to take a significant role in reducing carbon emissions.
D) The United States has shared new environmental technology with developing countries in the hopes that these countries will reduce their carbon emissions.