Refer to the Figure Showing the Excretory Systems of Flatworms

Refer to the figure showing the excretory systems of flatworms. Based on the figure, which statement is false?

A) Secretion occurs at point 1.
B) The fluid at point 2 is less concentrated than the extracellular fluid.
C) At point 3, solutes are actively transported into the protonephridium.
D) Structures at point 5 help move the fluid through the excretory system.
E) The processes occurring at point 1 in flatworms occur in the metanephridium of earthworms.