Why Did Max Weber Assume That Direct Democracy Is Impossible

Why did Max Weber assume that direct democracy is impossible as a means of regular government in large-scale societies?

A) because direct democracies would be at a military disadvantage to other more authoritarian societies
B) because at the time when Weber wrote, no direct democracies had yet existed
C) because the costs of direct democratic rule in large-scale societies would be especially prohibitive
D) because large-scale societies have too much racial, social, economic, and cultural diversity to allow for easy consensus
E) because millions of people cannot meet to make political decisions and running a complex society demands expertise