Sociological Research on the Effect of Education on Occupation and Income

Sociological research on the effect of education on occupation and income has found that

A) for all groups, getting an education makes it possible for one to move into the upper classes.
B) public education has ensured that people from all social classes have an equal chance of achieving higher incomes.
C) for middle-class Whites, education improves one's chance of getting a middle-class job, but entering the upper class is unlikely.
D) scholarships have enabled working-class students to attend elite schools in large numbers, significantly improving their chances of securing elite positions.