Which electrolyte can be used for salt bridge between $Ag^+,Pb^{+2},Hg^{+2},Cu^{+},Te^+$ ions

Question

$\begin{array}{1 1}(a)\;KCl\\(b)\;SrSO_4\\(c)\;KNO_3\\(d)\;PbSO_4\end{array}$