In Contrast to the Function of Our Bodies,the Nematode Is

In contrast to the function of our bodies,the nematode is unusual insofar as it

A) lacks circular muscles to antagonize the longitudinal muscles and must rely on the rigid cuticle and hydrostatic pressure.
B) extends muscle cells to the nerve process,rather than nerves to the muscle cells.
C) does not utilize the Krebs cycle and electron transport chain in anaerobic parasitic species.
D) moves food through its alimentary tract without direct muscle contractions on the intestine.
E) All of the choices are "unusual" nematode adaptations.