What Is True About Academic Studies and Academic Views of Race

What is true about academic studies and academic views of race in the 1920s?

A) Many scholars and writers were beginning to denounce the ideas of racism and white supremacy.
B) Prominent scholars published numerous books warning about the threat to America from immigrants, and the dangers of "diluting" the white race.
C) Many academic reports were beginning to accept that blacks and whites were equal.
D) Academic studies tended to avoid controversy during the 1920s, especially the issues of race.