Which Sentence Describes How Basic Ecology and Applied Ecology Are

Which sentence describes how basic ecology and applied ecology are different?

A) Basic ecology investigates populations, while applied ecology investigates ecosystems.
B) Basic ecology investigates individual species, while applied ecology investigates food webs.
C) Basic ecology investigates distribution and interaction of species, while applied ecology investigates conservation and mitigation of damage.
D) Basic ecology investigates conservation and mitigation of damage, while applied ecology investigates distribution and interaction of species.