Which of the following ideas is supported in the text?

For African Americans to gain equality, they should support segregation.

For African Americans to gain equality, they must refuse to be treated a
inferior.
For African Americans to gain equality, they should apologize when insulted.
We refuse to allow the impression to remain that the Negro-American assents to inferiority, is submissive under oppression and apologetic before insults.

—W. E. B. Du Bois

The idea supported in the text is: "For African Americans to gain equality, they must refuse to be treated as inferior."