Which of the Following Describes Reverse Osmosis

Multiple Choice

Which of the following describes reverse osmosis?

A) High pressure saltwater is forced against a semipermeable membrane and fresh water comes out.
B) Saltwater is chemically reacted with aluminum particles,which chemically binds to the chloride ions.
C) The water is heated until it evaporates and condenses in a pure form.
D) High pressure saltwater is reacted with aluminum,which absorbs the sodium ions in an oxidation reaction.
E) none of the above