Which of the Following Is NOT a Reason Why the United

Which of the following is NOT a reason why the United States did NOT sign the Kyoto Protocol?

A) Although the evidence toward global warming is strong, we still do not understand all the consequences of policy actions.
B) Meeting the Kyoto targets would negatively affect the U.S. economy.
C) Kyoto failed to include the developing countries, especially China and India.
D) There was not enough cash incentive being provided to the United States to sign the protocol.