Which of the following correctly links the term with its definition? Select one:

a.
Containment; the policy that the Soviet Union used to spread communism.

b.
Containment; the policy that the U. S. used to stop the spread of communism after WWII.

c.
Cold War; the war to defeat Hitler between 1941-1945.

d.
Iron Curtain; the policy that the United States used to fight the spread of communism.