Jeb and His Brother John Are in Manufacturing Jobs That

Jeb and his brother John are in manufacturing jobs that pay the mean earnings in the United States. They then become farmers and their usual earnings, while remaining the same on average as the mean earings in the United States, vary from year to year. In one year, Jeb earns $20,000 more than usual while John earns $20,000 less than usual. If this occurred for many workers, then

A) inequality will increase.
B) inequality will decrease.
C) inequality will remain unchanged.
D) it is uncertain how inequality will change.