Research Examining the Associations Between IQ Scores and Outcomes Such

Research examining the associations between IQ scores and outcomes such as income and occupational success has demonstrated that

A) IQ score is more closely related to individuals' occupational success than any other factor ever studied.
B) regardless of the socioeconomic status of an individual's family of origin, individuals with high IQ scores always succeed.
C) other factors, such as motivation and social skills, have little impact on economic success.
D) people with comparable IQ scores tend to make similar amounts of money, despite variability in level of education.