People plant flowers in a local park. Which statement is correct?
A Flowers in parks are a public good because people can enjoy them at no charge.
B Flowers in parks are a public good because they are owned by local people and are not for profit.
C Flowers in parks are not a public good if local people can limit the number of visitors to the parks.
D Flowers in parks are not a public good if they are individual, not identical, in nature.