Which Statement About Exoskeletons Is True

Multiple Choice

Which statement about exoskeletons is true?

A) During molting, the old exoskeleton is reabsorbed and a new exoskeleton forms.
B) A clam shell is not an exoskeleton.
C) The arthropod cuticle is secreted by a layer of cells external to the exoskeleton.
D) The inner layer of the arthropod exoskeleton provides a surface for muscle attachment.
E) The arthropod exoskeleton is thickened at the joints.