How did World War II affect the economy of Great Britain?

A. It significantly weakened the British economy to the point that it needed to give up some of its colonial holdings.
B. It plunged Great Britain into a severe economic depression that took years to recover from.
C. It created an economic boom during which productivity and the standard of living increased greatly.
D. It catapulted Great Britain past the United States and the Soviet Union as the world's economic superpower.