Which List of Traits Is Characteristic of the Ecdysozoans

Which list of traits is characteristic of the ecdysozoans?

A) Periodically shed their outer covering,nonsegmented body plan and pseudocoelom on some,contain an exoskeleton,and undergo metamorphosis.
B) Periodically shed their outer covering,nonsegmented body plan and contain a layer of jellylike fluid called mesoglea,contain an exoskeleton,and undergo metamorphosis.
C) Periodically shed their outer covering,segmented body plan and pseudocoelom on some,contain an endoskeleton,and undergo metamorphosis.
D) None of the these are correct.