A Concentration Cell Is Constructed Using Two Co Electrodes with Co²⁺

A concentration cell is constructed using two Co electrodes with Co²⁺ concentrations of 0.14 M and 1.8 * 10^-5 M in the two half-cells. Determine the standard reduction potential of Co²⁺, given that the potential of the cell at 25°C is 0.115 V.

A) +0.230 V
B) +0.115 V
C) -0.115 V
D) This cannot be determined with the information given.
E) 0 V