An Example of a Negative Externality Is

An example of a negative externality is

A) a chemical factory dumping waste in a river upstream from a popular fishing spot.
B) a chemical factory that enters a town and bids up wages, and, therefore, increases the cost of other firms.
C) a chemical factory producing fertilizers that kills plants, rather than help them as advertised.
D) a chemical factory producing fertilizers that do not, in fact, help plants grow.
E) a chemical factory that conducts research into the safe disposal if chemicals.