In what way does the unemployment affect the unemployed and their families

A．black Americans are most prejudicially treated in the U. S.
B．discrimination in the South was not more obvious than in the North
C．the situation of blacks is almost the same today as it was in the 1930s
D．after blacks became free people they didn't experience discrimination in employment and public facilities

A．were gone
B．have been existing in the American society
C．don't exclude new immigrants from participation in the society
D．are mainly caused by the slavery