Which of the following correctly explains why concentration cells have a standard cell potential of 0 volts?

W) According to the Nernst equation, the standard cell potential is cancelled out by the concentration dependent term

X) At standard conditions, all cells have a standard cell potential of 0 volts

Y) Standard cell potentials are measured with all species at equal concentrations

Z) Concentration cells are used as a standard, so their standard cell potential is arbitrarily set to 0
Y) STANDARD CELL POTENTIALS ARE MEASURED WITH ALL SPECIES AT EQUAL CONCENTRATIONS