The author suggests that if the observers of Japan 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.
Culture would not have an influence on the productivity levels of workers.
D. The production levels of Japanese-run plants located in the United States would be equal to those of plants run by United States companies.