Which of the Following Is TRUE About Standard Electrode Potentials

Which of the following is TRUE about standard electrode potentials?

A) E°_cell ^{is negative for spontaneous reactions.}
B) Electrons will flow from a more positive electrode to a more negative electrode.
C) The electrode potential of the standard hydrogen electrode is exactly zero.
D) E°_cell is the sum between standard reduction potentials of the anode and the cathode.
E) The electrode in any half-cell with a greater tendency to undergo reduction is negatively charged relative to the standard hydrogen electrode and therefore has E° < 0.