With Respect to the History of Housework

With respect to the history of housework,

A) Labor-saving devices such as the electric washing machine significantly reduced the amount of time spent on housework.
B) The microwave oven was the only new home appliance that actually reduced overall housework time.
C) Time spent shopping and transporting children decreased in the twentieth century.
D) The term "housework" has been in the English language since at least 1400.
E) Increase in cleanliness had no effect on child mortality rates.