City planners are trying to decide which project to include in their next budget request: a new park or additional downtown parking spaces. Which group of people is most likely to be representative of the city's residents? [A] parents selected randomly from those attending open-house night at the city's elementary schools [B] people selected randomly from customers of the city's water department [C] randomly selected car owners who live in or near the city [D] business owners who respond to questionnaires mailed to randomly selected businesses