Which of the Following Statements About Segregation Is True

Which of the following statements about segregation is true?

A) The "better classes" of blacks were sometimes allowed into facilities reserved for whites.
B) Blacks faced many difficulties in trying to ride public transportation, although they often had no choice but to attempt to use it.
C) Segregation was apparent only in the South.
D) Segregation of public facilities began only in the twentieth century.