For the Electrochemical Cell Zn(s)| Zn²⁺ || Ag⁺ | Ag(s),the

For the electrochemical cell Zn(s) | Zn²⁺ || Ag⁺ | Ag(s) ,the standard cell potential is 1.56 V.A cell using these reagents was made,and the observed potential was 1.44 V at 25^oC.What is a possible explanation for the observed voltage?

A) The volume of the Zn²⁺ solution was larger than the volume of the Ag⁺ solution.
B) The volume of the Ag⁺ solution was larger than the volume of the Zn²⁺ solution.
C) The Zn²⁺ concentration was larger than the Ag⁺ concentration.
D) The Ag electrode was twice as large as the Zn electrode.
E) The Ag⁺ concentration was larger than the Zn²⁺ concentration.