Given ${\mathrm{E}}_{{\mathrm{Cr}}^{3+}/\mathrm{Cr}}^{\circ }=0.74\mathrm{V};{\mathrm{E}}_{{\mathrm{MnO}}_4^{-}/{\mathrm{Mn}}^{2+}}^{\circ }=1.51\mathrm{V}$  
           ${\mathrm{E}}_{{\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}/{\mathrm{Cr}}^{3+}}=1.33\mathrm{V};{\mathrm{E}}_{\mathrm{Cl}/{\mathrm{Cl}}^{-}}^{\circ }=1.36\mathrm{V}$
Based on the data given above strongest oxidising agent will be

• A

  Cl

• B

  ${\mathrm{Cr}}^{3+}$

• C

  ${\mathrm{Mn}}^{2+}$

• D

  ${\mathrm{MnO}}_4^{-}$