Ashley is taking a test. She has to write why comb jellies and jellyfish belong to two different phyla. What should Ashley write?
A that jellyfish are vertebrates, while comb jellies are not
B. that jellyfish are mobile, while comb jellies are not
C. that jellyfish have stinging cells, while comb jellies do not
D.
that jellyfish have an exoskeleton, while comb jellies do not​