Answer: D is correct
Explanation:
governments of these countries were not sovereign from the very beginning of the establishment of so-called "popular democracy" (1940s). The establishment itself of these regimes was schemed by Soviet spies, information services and local (Czech, Hungarian or German) communists. Elections through which communists came to power were usually manipulated. When local communists came to power they did not lead their own policy but were controled and dominated by Soviet communist party. That is why historians use term "satellite". It is an expression of dependency, obedience.