There Has Been Much Written About Changing Gender Roles and the Movement

There has been much written about changing gender roles and the movement toward more egalitarianism in marriage and household work. However, we might have a skewed viewed of this idea because much of this research has been done on which of the following groups?

A) Middle-class, college educated Americans.
B) Upper-class, privileged people, who represent the 1% of the highest economic echelon in America.
C) Poor, indigent people of color, who lack a college education and are unskilled laborers.
D) Working-class couples, with high school education, who work in factories.