For Each of the Following Sets of Subject, Audience, and Purpose

For each of the following sets of subject, audience, and purpose, select the letter of the most appropriate choice for the blank.
-Subject: reasons to vote for Mayor Teresa Justice, who is running for reelection in Pleasantview
Audience: _____________________________________
Purpose: to convince readers to vote for the mayor

A) people who have not registered to vote
B) registered voters of Pleasantview who have already decided how they will vote
C) registered voters of Pleasantview who have not yet decided how they will vote