Why Does Negative Campaigning Undermine Democracy

Why does negative campaigning undermine democracy?

A) Such campaigning means some elections are decided on the basis of inaccurate charges.
B) Discussions of public policy are discouraged as candidates throw mud.
C) Many good people may decide not to enter political life.
D) Negative campaigning disheartens citizens, contributing to many deciding not to vote.
E) All of the above factors contribute to undermining democracy.