Two Solutions Are Separated by a Selectively Permeable Membrane

Multiple Choice

Two solutions are separated by a selectively permeable membrane. On side A, there is a solution composed of 20% protein and 80% water. On side B, the solution is 100% water. As osmosis occurs, what will happen to the solution on side A?

A) It will become less concentrated since protein will move from A to B.
B) It will become more concentrated since water passes from B to A.
C) It will become more concentrated since water passes from A to B.
D) It will become less concentrated since water passes from B to A.
E) It will become more concentrated since protein will move from B to A.