As Wartime Production Systems Created More Jobs in Cities Such

As wartime production systems created more jobs in cities such as Los Angeles and Detroit,black(s)

A) moved by the hundreds of thousands from the rural south to the north and west.
B) generally proved unwilling to move from the south in pursuit of such jobs.
C) were prevented from moving out of the south by Jim Crow laws.
D) men moved into northern and western cities,but women generally stayed in the south.
E) almost completely abandoned the rural south.