Since About 1970 in the U.S

Since about 1970 in the U.S.,

A) decreases in the wages of unskilled workers, relative to skilled workers, have led to increased inequality in family incomes.
B) increases in the wages of unskilled workers, relative to skilled workers, have led to increased equality in family incomes.
C) inequality in family incomes has increased, despite increases in the wages of unskilled workers relative to skilled workers.
D) inequality in family incomes has decreased, despite increases in the wages of skilled workers relative to unskilled workers.