During the Cold War,the United States Tended to Use Hard

During the Cold War,the United States tended to use hard power with regard to international relations.Joseph Nye,former assistant secretary of defense,concludes that use of hard power in international politics today is:

A) needed more than ever.
B) encouraged only in situations where there is a large difference in military power between states.
C) no longer needed,especially because countries are economically dependent on each other.
D) now outlawed by the Geneva Conventions.