What Impact Did the Second World War Have on American

What impact did the Second World War have on American industry?

A) It caused the breakup of major corporations because smaller production units were more efficient in manufacturing war materiel.
B) It accelerated the trend within industry to transfer jobs to Latin America and other regions where labor costs were lower.
C) It furthered the trend toward bigness by consolidating manufacturing into the hands of a few giant corporations.
D) Many major American corporations faced financial problems at war's end because of the no-profit pledge they had to make to receive defense contracts.