Why Would a Direct Democracy Be Unlikely to Succeed in the United

Why would a direct democracy be unlikely to succeed in the United States?

A) The lower political participation by citizens would skew legislation too far away from the good of the majority.
B) The large population of the United States would likely make any direct democracy too unwieldy and inefficient to accomplish much.
C) The population of the United States changes too often in terms of diversity to make the direct democracy approach feasible.
D) The United States currently utilizes a direct democracy approach to all elections and legislation at various levels of government.
E) The political culture of the representative democracy is too ingrained in the United States for a shift to direct democracy to be possible.