How Did the Western Countries React to the Soviet Invasion

Multiple Choice

How did the Western countries react to the Soviet invasion of Czechoslovakia in 1968?

A) There was no significant reaction by the Western countries.
B) The Western countries imposed economic sanctions on the Soviets.
C) The Western countries mobilized their military alliances.
D) The Western countries guided the UN to stern action.
E) The Soviet invasion led to a revitalization of detente.