Reduction potential of Silver electrode in contact with 0.1M ${\mathrm{AgNO}}_3$ solution is ( ${\mathrm{E}}_{{\mathrm{Ag}}^{+}/\mathrm{Ag}}^0=+0.8\mathrm{M}$ )

• A

  +0.68 V

• B

  +0.86 V

• C

  +0.92 V

• D

  +0.74 V