The Soviet Union and the United States Were at Odds

The Soviet Union and the United States were at odds over many things during the post-World War II era, but the issue that led to the most dramatic confrontation between the two occurred when

A) the United States introduced a new currency, the deutsche mark, into West Germany, thus financially separating East Germany from West Germany, to East Germany's detriment.
B) Stalin attempted to get the Allies to leave West Berlin in 1948 by imposing a blockade that denied ground access to the city, and the Americans had to carry out a long-running airlift of supplies.
C) the Soviet Union began in late 1945 to impose satellite governments throughout the countries of eastern Europe.
D) the Soviets accused, with reason, the Allies of refusing to honor wartime commitments to share West German resources with them, to serve as war reparations.
E) the West chose to ignore earlier plans to hunt down Nazis and bring them to justice, choosing instead to build up German protections in hopes of keeping communism from spreading.