Clara and George,two Political Science Graduates,are Discussing the Political System

Clara and George,two political science graduates,are discussing the political system of the U.S.Clara holds that the two-party system is unlikely to experience any changes in the near future.However,George believes that America will soon follow the multiparty system.Which of the following statements,if true,supports Clara's view? 

A)  The number of eligible voters who actually cast their votes has reduced in the last couple of years. 
B)  A key characteristic of recent politics has been the extreme partisanship of party activists and members of Congress. 
C)  The rules governing campaign financing hinder the major parties as well as the minor parties. 
D)  The structure of many U.S. institutions prevents third parties from enjoying electoral success. 
E)  The rolling realignment after the elections of 1968 has resulted in parties that are much more heterogeneous.