Unicellular and Simple Multicellular Organisms Isolate and Eliminate Waste Materials

Unicellular and simple multicellular organisms isolate and eliminate waste materials by:

A) moving the wastes into a contractile vacuole and eliminating them through exocytosis.
B) filtering the wastes through specialized filters in the plasma membrane and into the extracellular space.
C) secreting wastes into excretory tubules that connect to the outside of the cell.
D) filtering the wastes into a collecting tubule and then selectively reabsorbing key solutes before excretion.
E) All of these choices are correct.