Which One of the Following Statements About Habitat Restoration Is

Which one of the following statements about habitat restoration is false?

A) Pristine restoration requires the most complete knowledge of the ecosystem being restored.
B) Habitat restoration without removal of introduced species can be counter-productive.
C) Habitat restoration without removal of persistent pollutants can be counter-productive.
D) Economically,preservation of existing ecosystems is always less expensive than restoration of "environmental train wrecks."
E) Because removing non-native species as quickly as possible is important,quickly introducing parasites and predators of the non-native species is often warranted.