In the Late Nineteenth Century, Child Labor Was

In the late nineteenth century, child labor was

A) common in the coal mines and cotton mills.
B) uncommon because children were not strong enough to handle the large machines and fast pace of factory production.
C) uncommon because children had to stay in school until age sixteen.
D) uncommon because for the first time childhood was seen as a distinct stage of life reserved for innocence, play, education, and maternal love.
E) common in the economically-depressed south, but uncommon in the prosperous north.