Which of the following occurs in this system?
A. Water does not cross the membrane at all. Water flows equally in both directions.
B. There is a net flow of water from the 10% starch solution into the 4% starch solution.
C. There is a net flow of water from the 4% starch solution into the 10% starch solution.
D. Starch moves out of the 10% starch solution into the 4% starch solution.