How Can Biodiversity Affect the Way We Decontaminate Industrial Sites

Multiple Choice

How can biodiversity affect the way we decontaminate industrial sites?
I.Bacteria have been found to be able to detoxify certain chemicals; perhaps there are more.
II.Trees produce sawdust, which can be used to soak up chemicals.
III.Species evolving in contaminated areas could adapt and detoxify the area.

A) only I
B) only II
C) only III
D) only II and III