Which of the Following Aspects of Political Structure in the U.S

Which of the following aspects of political structure in the U.S. might help explain the poor turnout of lower-income groups?

A) the strong appeal of third-party candidates in the U.S.
B) the centrist appeal of the major parties
C) the focus of major political parties on economic divisions in the populace
D) major-party disinterest in voter mobilization
E) the failure of major parties to campaign in a public and visible manner