Why did the migrant workers in Salinas live in a shantytown called "Little Oklahoma"?

A.
Migrant workers in California had been coming from Oklahoma for generations.

B.
Most shantytowns were either called Hoovervilles or Little Oklahomas.

C.
The Mexican workers in California called all white workers Okies.

D.
They were farmers originally from Oklahoma who had been displaced.

D. They were farmers originally from Oklahoma who had been displaced.