Banning DDT Was the Correct Decision, Because DDT Not Only

Multiple Choice

Banning DDT was the correct decision, because DDT not only killed unwanted pests such as mosquitoes, but also killed or made infertile many desirable animals, such as bald eagles. For this reason alone the ban on DDT should be continued. In the decades since DDT has been banned, the bald eagle population has stabilized.
Which of the following most accurately expresses the argument's main conclusion?

A) Bald eagles are incredibly important animals.
B) Mosquitoes are unwanted pests.
C) DDT destroyed not only unwanted pests but also other animals.
D) Banning DDT was the correct decision and the ban should continue.
E) Since DDT has been banned the bald eagle population has stabilized.