Which Statement About Arthropod Skeletons Is True

Multiple Choice

Which statement about arthropod skeletons is true?

A) Muscles attach to their rigid external skeleton.
B) Cells external to the cuticle secrete it.
C) Typically, muscles create movement by pulling on rigid internal structures.
D) Joints of the arthropod cuticle contain stiffening materials.
E) During molting, cells under the cuticle secrete a substance that dissolves chitin.