Which Statement About Excretory Systems Is False

Which statement about excretory systems is false?

A) Excretory systems eliminate toxic waste products of protein metabolism.
B) Secretion and reabsorption modify the filtrate, eventually forming urine.
C) Excretory systems eliminate solutes present in excess and retain valuable solutes.
D) In closed circulatory systems, blood pressure drives filtration.
E) Extracellular fluid that has been filtered contains large molecules.