The author suggests that if the observers of Japan mentioned in line 4 were correct, which

The author suggests that if the observers of Japan mentioned in line 4 were correct, which of the following would be the case？

A．The equipment used in Japanese automobile plants would be different from the equipment used in United States plants.

B．Japanese workers would be trained to do several different production jobs.

C．Culture would not have an influence on the productivity levels of workers.

D．The workers in Japanese-run plants would have higher productivity levels regardless of where they were located.

E．The production levels of Japanese-run plants located in the United States would be equal to those of plants run by United States companies.

请帮忙给出正确答案和分析，谢谢！