Which multiple choice answe is it

The city of Raleigh has 7900 registered voters. There are two candidates for city council in an upcoming election: Brown and Feliz. The day before the election, a telephone poll of 400 randomly selected registered voters was conducted. 232 said they'd vote for Brown, 147 said they'd vote for Feliz, and 21 were undecided. Describe the population the surveyors are really interested in. All citizens of Raleigh O All registered voters in Raleigh All registered voters with telephones in Raleigh The 400 voters surveyed The 232 voters who said they'd vote for Brown O None of the above