Consider the Reaction of Iodine with Manganese Dioxide

Consider the reaction of iodine with manganese dioxide
The equilibrium constant for the overall reaction is 8.30 × 10^-7. Calculate E°_cell for the reaction at 25°C.

A) -0.36 V
B) -0.18 V
C) -0.12 V
D) -0.060 V
E) none of the above