Which of the Following Is NOT Evidence That Plants and the Animals

Which of the following is NOT evidence that plants and the animals that eat them are locked in an evolutionary "arms race"?

A) R genes, instrumental in plant pathogen recognition, form one of the largest gene families in plants.
B) Plants produce about 6000 alkaloids that act as chemical defense molecules.
C) Plants produce over 10,000 terpenoid compounds.
D) Plants in areas of high herbivory often produce low levels of defense compounds in their leaves.
E) There are many specialist herbivores that are able to detoxify and in other ways avoid the chemical defenses produced by the plant they consume.