The solubiltiy product of silver iodide is `8.3 xx 10^(-17)` and the standard potential (reduction) of `Ag,Ag^(+)` electrode is `+0.800` volts at `25^(@)C`. The standard potential of `Ag,AgI//I^(-)` electrode (reduction) from these data is
A. `-0.30V`
B. `+0.15V`
C. `+0.10V`
D. `-0.15V`