Why did the Soviet Union refuse to end its occupation of the countries of Eastern Europe that it conquered during World War II
A. Soviet generals were reluctant to leave eastern Europe because they had built strong military base there.
B. Stalin believed that a retreat from Eastern Europe might be viewed by his citizens as a sign of weakness.
C. Soviet leaders wanted to maintain a buffer between Russia and the west, fearing intervention by capitalist countries.
D. Eastern European countries wanted the Soviet army to stay and provide them with military protection.