One Explanation for Why IQ Scores Are Good Predictors of Academic

One explanation for why IQ scores are good predictors of academic success is that

A) IQ scores also predict social success, which is important for school success.
B) people in the professions have higher IQs than the population in general.
C) IQ tests are good predictors of occupational success, which requires academic success.
D) success on IQ tests and academic success require the same skills.