Read the excerpt from Roll of Thunder, Hear My Cry. For the month of January I was Lillian Jean's slave and she thoroughly enjoyed it. She even took to waiting for me in the morning with Jeremy so that I could carry her books. When friends of hers walked with us, she bragged about her little colored friend and almost hugged herself with pleasure when I called her "Miz" Lillian Jean.

What does the excerpt show about the historical time period of the story?

A. It shows that there were African American citizens who treated white citizens in unjust and humiliating ways.
B. It shows that white children treated African American children as equals even if white adults in the community did not.
C. It shows that African American children and white children easily developed friendships in spite of racial injustice.
D. It shows that there were white citizens who treated African American citizens in unjust and humiliating ways.