Which Statement About Excretory Tubules of Flatworms, Annelids, or Insects

Which statement about excretory tubules of flatworms, annelids, or insects is false?

A) In flatworms and annelids, tubule cells modify the composition of fluid by reabsorption and secretion.
B) In insects, cells of Malpighian tubules actively transport solute into tubules.
C) Tubules of flatworms receive fluid from the coelom.
D) The tubules of annelids are surrounded by capillaries.
E) In annelids, cilia of the nephrostome sweep fluid into the metanephridia, which lead into tubules.