Which of the Following Is Most Likely an Example of Wage

Which of the following is most likely an example of wage disparity due to differences in talent and ability?

A) The median earnings of White men are more than the median earnings of African Americans.
B) People with graduate degrees usually have higher earnings than people who did not graduate from high school.
C) Nick Saban, the football coach at the University of Alabama, earns more than the local high school football coach.
D) Crab fishermen on the Bering Sea earn more than clerks who sell goldfish at a pet store.