Why Do Some Researchers NOT Believe That Interest Group Involvement

Why do some researchers NOT believe that interest group involvement in direct democracy initiatives is a major problem?

A) Interest groups only get involved in a few issues, and therefore have little effect on general policy.
B) Interest groups are too small to have major effects on public policy.
C) Interest groups on both sides of an issue run ads, so they cancel each other out and don't have much effect on voters' preferences.
D) Interest groups are generally disliked by Americans, who see through their arguments very easily.
E) Interest groups are not allowed to get involved in direct democracy following the case Baumgartner v. Jones (1993) .