Given the folowing standerd electrode potentials, the `K_(sp)` for `PbBr^(2)` is :
`PbBr_(2)(s)+2e^(-)toPb(s)+2Br^(-)(aq), E^(@)=-0.248 V`
`Pb^(2+)(aq)+2e^(-)toPb(s), E^(@)=-0.126 V`
A. `7.4xx10^(-5)`
B. `4.9xx10^(-14)`
C. `5.2xx10^(-6)`
D. `2.3xx10^(-13)`