B. The Cold War was coming to an end is your best answer choice.
Explanation:
The Cold War between the US & USSR lasted from just after World War II to 1991. In this case, as it is asking for you to describe the relations during 1989, the USSR was systematically disintegrating due to failure both in the political sphere, as well as in their economic sphere. They were suffering defeats in the middle east, as well as their iron control of the "iron curtain" over Eastern Europe was slowly waning. True "communist" ideology had already been broken, and in an effort to save the USSR, lesser extremism was implemented, but it was already too late. The USSR dissolve less than two years later.
