Which of the Following Is Responsible for the Growing Hypoxic

Which of the following is responsible for the growing hypoxic, or dead zone, problem in the Gulf of Mexico?

A) animal feed lots and agricultural fertilizers used throughout the Midwest.
B) residual oil from roads and parking lots throughout the Midwest.
C) leachate escaping from landfills throughout the Midwest.
D) acid rain falling on urban areas throughout the Midwest.
E) EPA requirement of oxygenated fuels throughout the Midwest.