In the Post-Bellum North,blacks Newly Arriving in Northern Cities Often

In the post-bellum North,blacks newly arriving in Northern cities often ended up as strikebreakers because:

A) Poverty gave them little choice
B) Blacks were paid more money than the striking whites had been paid
C) Blacks were opposed to unions based on religious beliefs
D) Hispanics and Native Americans were not willing to do this kind of work