Why did the black residents of Tulsa live in separate neighborhoods from the white residents?
A There was a law that stated that if three-fourths of the residents on a block were of one race, then only people of that race could live there.
B There were many good paying jobs in Greenwood, so all the black families wanted to live there to be near their workplaces.
C There were many people who wanted to live in Greenwood but the land itself was unusable.
D There was a lack of transportation in Greenwood, making it undesirable for white families.