$E^o_{Zn^{+2}/Zn}=0.76V,E^o_{Cu^{+2}/Cu}=0.34V$ find $\Delta G^orx_n$ of following cell $Zn/Zn^{+2}\parallel Cu^{+2}/Cu$

Question

$\begin{array}{1 1}(a)\;200KJ\\(b)\;106.15KJ\\(c)\;212.3KJ\\(d)\;424.6KJ\end{array}$