For a Membrane Potential to Remain Stable, Which of the Following

For a membrane potential to remain stable, which of the following must be true?

A) The potassium conductance must be equal to zero.
B) The sum of all ionic currents must be equal to zero.
C) The chloride and potassium equilibrium potentials must be the same.
D) The chloride and sodium currents must be equal.
E) The chloride and potassium conductances must be equal.