In Discussing Discrimination and the Wage Differences That Exist Between

In discussing discrimination and the wage differences that exist between men and women and between ethnicities,it has been said that "the disease is political even if the symptom is economic." What does this mean

A) Wage differences persist because the political system has failed to enact laws to equalize wages among all groups.
B) Wage differences exist because of past discrimination on the part of political bodies such as city councils and school boards.
C) Wage differences exist because of the differences in the political views of the different groups.
D) Wage differences exist because the political system is biased against paying compensating differentials.