Refer to the Figure Shown

Refer to the figure shown. Assume that the two pistons have the same mass and move without friction, the center membrane in the diagram is permeable only to water, and solutes are shaded according to concentration (the darker the shading, the higher the concentration) .
If a piston moved up because of water movement, could it be physically pushed back down to force water through the membrane?

A) Yes, the physical pressure would oppose the osmotic pressure.
B) No, solutes would oppose the physical pressure.
C) Yes, and this would generate more charge on the membrane.
D) Yes, but only if the membrane were permeable to the solute.