The city of Raleigh has 10100 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 300 randornly selected registered voters was conducted. 100 said they'd vote for Brown, 170 said they'd vote for Feliz, and 30 were undecided. Describe the population the surveyors are really interested in.
O All citizens of Raleigh
O All registered voters in Raleigh
O All registered voters with telephones in Raleigh
O The 300 voters surveyed
O The 100 voters who said they'd vote for Brown
O None of the above