Which of the Following Is an Example of Deterrence

Multiple Choice

Which of the following is an example of deterrence?

A) The Soviet Union cutting off trade with Western countries so that they could not use economic sanctions as leverage in arms agreements.
B) The United States threatening to attack Iran if it did not cease developing nuclear weapons.
C) The Soviet Union placing missiles in Cuba so that it could threaten the United States.
D) The United States threatening to increase tariffs on another country's imports if that country first increases tariffs on U.S.products.
E) China attacking when the United States sent its troops into North Korea during the Korean War.