How Does Kohn and Schooler Model of Status Attainment Link

How does Kohn and Schooler model of status attainment link economic status, job characteristics, and personality?

A) People with lower economic status tend to find work in jobs that have more supervision.
B) People with lower economic status tend to find work in jobs that require less intellectual flexibility.
C) People with less intellectual flexibility tend to seek jobs that are routinized.
D) all of the above