Which of the Following Is Not True of the Giant

Which of the following is not true of the giant flying dragonflies of the Carboniferous and Permian?

A) Some species grew to have wing spans as wide or wider than many modern birds of prey.
B) They were the largest flying predators of the time.
C) Such large flying insects could exist because of the higher concentrations of atmospheric oxygen compared to the present.
D) Their predators were giant reptiles.
E) Fossils of one large species, Meganeurosis permiana, have been found in the Permian rocks of Kansas.