Which of the following would cause an immediate reduction in the amount of potassium leaking out of a cell?

Which of the following would cause an immediate reduction in the amount of potassium leaking out of a cell?
A.Increasing the permeability of the membrane to potassium
B.Hyperpolarizing the membrane potential
C.Decreasing the extracellular potassium concentration
D.Reducing the activity of the sodium-potassium pump
正确答案：Hyperpolarizing the membrane potential