Answer :
I would say C and D bc they make up the lowest class, which did not take part in the positive growth that took place in the U.S. during the late 1800s.
The wealth and richness achieved thanks to the steel industry in the late 1800s specially benefit steel magnates and store owners. A good example is Andrew Carnegie, one of the richest Americans that at some point was even richer than Rockefeller. However, tenement residents, option c, and immigrants, option d, did not enjoy this prosperity and were commonly abused in their workplace, or had low salaries, which is why many of them formed Unions to protect their interests and rights.
