In the United States,a Reason for the Increase of the Labor

In the United States,a reason for the increase of the labor force participation rate for women is that

A) an increase in wealth allowed men to retire early.
B) more women pursued a college education and received higher wages upon graduation.
C) improved Social Security benefits are available for women if they work.
D) there has been a decrease in jobs with flexible hours.
E) fewer women married.