Which Statement About the Movement of Potassium Ions During Stomatal

Which statement about the movement of potassium ions during stomatal opening is true?

A) K⁺ enters guard cells,water follows,and the cells become turgid.
B) K⁺ leaves guard cells and they become less turgid.
C) K⁺ enters guard cells and they become less turgid.
D) K⁺ leaves guard cells and they become turgid.
E) K⁺ reaches equilibrium in guard cells and their surroundings.