How Are Housework and Childcare Most Often Distributed in a Family

How are housework and childcare most often distributed in a family in which both parents work?

A) Both parents put in time commensurate with how much they work.
B) Both parents share the work equally no matter how many hours they each work.
C) The man gradually increases the amount of work he does if the woman starts working more hours.
D) The woman does more of the housework and childcare no matter how many hours she works, even if it is more than the man.