By 1900,the Average Yearly Income of American Workers

By 1900,the average yearly income of American workers

A) was about $600.
B) allowed most workers to maintain a reasonably comfortable standard of living.
C) remained generally unaffected by economic boom-and-bust cycles.
D) both allowed most workers to maintain a reasonably comfortable standard of living and remained generally unaffected by economic boom-and-bust cycles.
E) None of these answers is correct.