After the end of the Second World War there were two forces of interest in political, economic and ideological terms. Western allies from one and the Soviet Union on the other. The division of Germany into two areas of interest, where the eastern zone belonged to the Soviet Union, only encouraged an increase in their tendency to expand the influence of Communism in Eastern Europe. Thus, in all the countries of Eastern Europe, communist governments have been established, ignoring even some official election wills, like in Hungary. This later led to the formation of the Warsaw Pact. In all the governments of all the Eastern countries, they were necessarily advisers or representatives of the Soviet Union.
The answer is: B.