There Is Concern Over the Use of Dioxin,a Synthetic Plant

There is concern over the use of dioxin,a synthetic plant hormone,as a weed killer because

A) it weakens the shells of the eggs of predatory birds,resulting in the death of their offspring.
B) it causes massive fish kills when it gets into lakes and streams.
C) it can cause irreversible mutations in crop plants.
D) it can cause birth defects and leukemia in mammals.