Which Statement Is False

Which statement is false?

A) The stomata open simply to allow carbon dioxide to enter the leaf, not as a result of environmental conditions.
B) As carbon dioxide levels drop in guard cells, there is an influx of potassium.
C) When potassium ions enter guard cells, water moves into the guard cells by osmosis.
D) At night, in most plants carbon dioxide builds up in guard cells, resulting in the movement of potassium and water out of the guard cells.
E) When the guard cells shrivel, the stomata are closed.