According to the article, why does David Pilgrim think that Jim Crow became the name of the racist set of laws in the South? (A) He thinks that Thomas Dartmouth Rice suggested it as he traveled through the South.
(B) He thinks that it became a popular name after "Uncle Tom's Cabin" mentioned it.
(C) He thinks that Atlantic & North Carolina Railroad named them during the Civil War.
(D) He thinks that it came from a combination of sources and that it changed over time.