Which evidence would be most useful in addressing the topic laid out by the prompt?
A. The Berlin Airlift assisted the residents of West Berlin for 11 months.
B. The Berlin Airlift caused the Soviet Union to end the blockade of West Berlin.
C. The Berlin Airlift increased tensions between the United States and the Soviet Union.
D. The Berlin Airlift began after the Soviet Union cut off all land access to the city of West Berlin.