Digestion in Humans and Earthworms

Digestion in humans and earthworms

A) is similar in that in both organisms, digestion is an extracellular process, occurring in a complete digestive tract.
B) is different in that earthworms have a sac plan body plan and humans have a tube-within-a-tube body plan.
C) is different in that digestion is an extracellular process in humans but an intracellular process in earthworms.
D) is similar in that in both organisms, digestion is an intracellular process, occurring in an incomplete digestive system.
E) is similar in that in both organisms, digestion occurs in a simple tract, in which all parts of the tract are similar.