Which statement about the black migration of the 1920s is not true?

a.
blacks from the south found better living and working prospects in northern cities.

b.
many blacks found conditions in northern cities worse than under jim crow and returned to the south.

c.
blacks who moved to northern cities still lived in segregated neighborhoods.

d.
many blacks who had been disenfranchised in the south gained the right to vote in northern cities.