Which is an example of scapegoating?

A. People who enter the United States without legal papers protest
for the right to get work permits.
B. People send e-mails to their legislators about the need to change
graduation requirements for the incoming group of tenth graders.
C. People collect money to repair damage done to a statue of a Civil
War soldier.
D. People with low incomes are blamed for the housing market crisis
instead of the bankers.