The standard electrode potentials of $zn,Ag$ and $Cu$ are $-0.76,0.80$ and $0.34$ volt respectively ; then

Question

$\begin{array}{1 1} \text{Ag can oxidised Zn and Cu } \\ \text{Ag can reduced $Zn^{2+}$ and $Cu^{2+}$ } \\ \text{Zn can reduced $Ag^{+} $ and $Cu^{2+}$ } \\ \text{Cu can oxidised Zn and Ag } \end{array}$