With Respect to the Relationship Between Education and Wages, Research

With respect to the relationship between education and wages, research shows that

A) a worker's years of schooling directly effects her or his wages, regardless of sex.
B) sex differences in education are unrelated to the gender gap in wages.
C) educational attainment has a significant impact on raising women's wages, but the reverse is true for men.
D) educational attainment has a significant impact on the wages of minority men and women, but is unrelated to the wages of White men and women.