Why Do Fish Kills Occur More Often in Eutrophic Lakes

Why do fish kills occur more often in eutrophic lakes?

A) Nutrients spark an algal bloom and as the algae decay the oxygen is used up
B) Nutrients spark and algal bloom, and the algae produce toxic amounts of oxygen
C) A lack of nutrients prevents enough algae from growing and the fish starve
D) A lack of nutrients prevents enough algae from growing and not enough oxygen is produced
E) Too many nutrients are toxic to the fish by harming their gills