Which of the Following Situations Represents a Flexible/integrated Pattern of Gender

Which of the following situations represents a flexible/integrated pattern of gender division of labor?

A) A pastoral nomadic camp in which the men spend most of the time with the herds,and women remain in camp and make butter and clothing.
B) An intensive agricultural society in which the men are out plowing the fields from dawn until dusk while the women are making bread,gathering eggs,making baskets,and other household work.
C) An industrial society in which a factory worker leaves for work at 7 a.m.
And returns home at 5:30 p.m. ,while his wife takes care of the children at home.
D) All of the above.
E) None of the above.