What was the effect of anti-Chinese riots and discriminatory acts against Chinese immigrants in the 1880s? A.
Rioters who attacked immigrants were put in jail.
B.
The American government enacted new laws to protect immigrants.
C.
New laws were passed to stop Chinese immigration to the US.
D.
Chinese immigrants successfully sued the cities of San Francisco, California, and Tacoma, Washington, for failing to protect their civil liberties.

Please select the best answer from the choices provided.