Stalin Initiated the Blockade of the City of West Berlin

Stalin initiated the blockade of the city of West Berlin in order to:

A) keep West Berliners from visiting the Soviet portion of the city.
B) keep people in the Soviet section from fleeing the country.
C) force the West Berliners to accept the authority of the Soviet Union.
D) keep Western influence and West German currency out of the Soviet zone.
E) force the Americans to give him control of all of Germany.