Stephen Ceci Argues That the Positive Relationship Between Schooling and IQ

Stephen Ceci argues that the positive relationship between schooling and IQ

A) is supported by the fact that children's IQs tend to decline over summer vacation.
B) reflects the fact that schooling nurtures the same skills assessed on IQ tests.
C) is due in part to the fact that intelligent people tend to stay in school longer.
D) All of the alternatives are correct