Which of the Following Was True of Post-World War I

Which of the following was true of post-World War I European economies?

A) They collapsed under the weight of war debt and reconstruction costs and never managed to recover.
B) Since western European economies were destroyed, new industrial growth in eastern Europe became the major competition for the United States and Japan.
C) Although the European economies were weakened, the war forced industry to become more productive and efficient.
D) They quickly regained their prewar strength, and by 1925 Britain and Germany once again surpassed the United States in industrial production.