EMF of which of the following cells at 298 K is highest? Given, \[E_{\left( M{{g}^{2+}}/mg \right)}^{0}=-2.37V;\] \[E_{\left( C{{u}^{2}}/Cu \right)}^{0}=+2.34V;\] \[E_{\left( F{{e}^{2+}}/Fe \right)}^{0}=-0.44V;\] \[E_{\left( S{{n}^{2+}}/Sn \right)}^{0}=-0.14V;\] \[E_{\left( \frac{1}{2}B{{r}_{2}}/B{{r}^{-}} \right)}^{0}=+1.08V;\]

• A. \[Mg(s)|M{{g}^{2+}}(0.001M)|\]\[|C{{u}^{2+}}(0.0001M)|Cu(s)\]
• B. \[Fe(s)|F{{e}^{2+}}(0.001M)|\]\[|{{H}^{+}}(1M)|{{H}_{2}}(g)(1bar)|Pt(s)\]
• C. \[Sn(s)S{{n}^{2+}}(0.050M)|\]\[|{{H}^{+}}(0.020M)|{{H}_{2}}(g)(1bar)|Pt(s)\]
• D. \[Pt(s)|B{{r}_{2}}(l)|B{{r}^{+}}(0.010M)|\]\[|{{H}^{+}}(0.030M)|{{H}_{2}}(g)(1bar)|Pt(s)\]