$Zn/Zn^{+2}(C_1)\parallel Zn^{+2}(C_2)/Zn$.For this cell $\Delta G$ is -ve if

Question

$\begin{array}{1 1}(a)\;C_1=C_2\\(b)\;C_1 > C_2\\(c)\; C_2 > C_1\\(d)\;None\end{array}$