Which of the following scenarios illustrates an example of how environmental policies have resulted in the reversal of environmental damage? A. Banning CFCs has resulted in the shrinking of a hole in the ozone above Antarctica. B. Proper regulation by Ukrainian authorities prevented a catastrophe in Chernobyl. C. New environmental policies have slowed the progress of climate change. D. Banning certain fertilizers has reduced the rate of eutrophication around the globe.