Which of the statements about the process of excretion in complex multicellular animals is true?
A. Water and all other molecules are actively transported back into the bloodstream during reabsorption.
B. Selective filtration of the blood occurs as blood pressure forces materials into an extracellular space.
C. During the process of reabsorption, additional toxic compounds and excess ions that were not filtered from the blood initially are removed from the organism.
D. Reabsorption helps to send toxic compounds to the liver so they can be detoxified and turned into usable compounds by the body.