What Most Accurately Describes Brazil in Terms of Social Class

What most accurately describes Brazil in terms of social class structure?

A) Brazil is fairly homogenious with social classes structures fairly the same in every region.
B) Brazil's Northeast tends to have the highest percentage of people, mostly of color, living in poverty
C) Brazil's Southeast tends to have the highest percentage of it population living in the affluent and middle class sectors.
D) Brazil's Amazon interior is rapidely becomeing the most affluent and technologically dynamic part of the country.