I would say either A or C, but i'm not positive, my research didn't tell me much, sorry!
Answer:
C
He blamed the Christians for starting a fire.
D. To be competitive, companies must continue to be innovative.
In the U.S., There are some powers delegated to the government only, and others that are reserved to the states. However, there are powers that both the government and the states have and can exercise simultaneously within the U.S. territory, these are called concurrent powers. The areas in which the federal govenrment and the states have concurrent power include in the power to tax, make roads, protect the environment, establish bankruptcy laws, create lower courts and regulate elections, among others.
Are you Australian? In that case it would rather ironically be the Aboriginals and their children. If not, (and I'm not 100 percent sure about this one) but this was during the time period of the African American rights Reform period in the United States.