What are some of the ways that advances in information technologies have had different effects for different classes of workers? How have men and women workers been affected in different ways? (Check All That Apply)

A. More worker are engaged in "office and administrative" support occupations.

B. There is some evidence that early examples of office automation were most beneficial to male rather than to female workers.

C. As the number of manufacturing jobs relative to the total labor force has declined, more and more people are now found in white-collar occupations.

D. New technologies can reflect or even reinforce existing divisions of gender or ethnic lines.

Please explain all options including correct options.