【单选题】What does the author mean by 'do little to contribute to domestic comfort and not much to advance their husbands careers'(Lines 2-3, Paragraph 4)?
A.
Wives are always of little value to their husbands and families.
B.
Wives contribute less in improving the family's living standards.
C.
Wives' efforts are not enough to make their offspring comfortable.
D.
Wives are dispensable unless they can help with their husband's careers.