​What Phytoremediation Strategy, Best for Cleaning Up Metal Pollutants, Is

​What phytoremediation strategy, best for cleaning up metal pollutants, is being used at the Chernobyl nuclear power accident site in Ukraine?

A) ​planting trees that break down some of the toxins but release most of them to the atmosphere
B) ​facilitating the growth of soil microbial communities that will break down the toxins
C) ​using plants that break down the pollutants and release safe compounds to the soil
D) ​introducing nonnative plant species to increase the number of species present
E) ​using plants that store toxins in aboveground tissues that can be harvested for safe disposal