Which of the Following Statements About Exoskeletons Is True

Which of the following statements about exoskeletons is true?

A) They are a highly efficient means of anchoring muscles, thereby providing more efficient movement.
B) They provide protection from predators.
C) They must be shed for the animal to grow, and during the shedding period the animal is vulnerable to predators.
D) They provide support for walking on dry land.
E) All of the above