Read this passage from Narrative of the Life of Frederick Douglass. If the lineal descendants of Ham are alone to be scripturally enslaved, it is certain that slavery at the south must soon become unscriptural; for thousands are ushered into the world, annually, who, like myself, owe their existence to white fathers, and those fathers most frequently their own masters.

What is one effect of Douglass's allusion to the biblical story of the sons of Ham in his memoir?
A. It allows Douglass to admit that some forms of slavery are acceptable.
B. It helps Douglass reject the idea that slavery in America is justified by the Bible.
C. It forces Douglass to recognize that slavery has existed for centuries. D. It lets Douglass demonstrate that slavery harms both slaves and slaveholders.