Which of the Following Statements Best Describes the State of Nuclear

Which of the following statements best describes the state of nuclear proliferation in the world?

A) There is a massive race among all countries to develop the most nuclear weapons.
B) The United States is the only country still developing a nuclear arsenal.
C) While some developing countries continue to develop nuclear arsenals, many countries, including the U.S., have begun to reduce their stockpiles.
D) All nuclear weapons have been destroyed.