In the 1820s and 1830s,the Labor Force for Factory Work

In the 1820s and 1830s,the labor force for factory work in the United States

A) saw many skilled urban artisans move into factory jobs.
B) consisted mostly of European immigrants.
C) was reduced by dramatic improvements in agricultural production.
D) consisted mostly of European immigrants, saw many skilled urban artisans move into factory jobs, and ultimately was reduced by dramatic improvements in agricultural production.
E) None of these answers is correct.