All of the Following Led the West to Fear That

All of the following led the West to fear that Stalin had embarked on a plan of unlimited expansion after the Second World War except:

A) the Soviets violated their pledge of free elections for the east European states.
B) Stalin's stubbornness, paranoia, and lack of concern for world public opinion.
C) Stalin's massive aid to the Communist guerrillas in northern Greece.
D) the U.S.S.R.'s consolidation of the northern part of Korea into a Communist government.