In Which of the Following Ways Does the Concentration of Hydrogen

In which of the following ways does the concentration of hydrogen ions affect the movement of potassium ions into or out of cells, if at all?

A) Hydrogen ions have no effect on the movement of potassium ions.
B) Decreased hydrogen concentration will move potassium out of the bloodstream into the cells.
C) Decreased hydrogen concentration will move potassium from the cells into the bloodstream.
D) Increased hydrogen concentration will move potassium from the bloodstream into the cells.