What is the author's attitude towards the U. S. Bureau of Labor Statistics（）

A．The majority of people working in medical prfessions are male.
B．The difference between men' s pay and women' s pay will become larger and larger.
C．There is still a differencer between the earnings of men and women.
D．Women and men will exchange theil jobs in most areas.

A．Some professions are not suitable for women.
B．The principle of" equal pay for equal work" isn' t observed.
C．It is very difficult to change people' s attitude towards the roles of women.
D．Women are often in the majority in low-paying jobs.