The conductivity of saturated solution of `BaSO_(4)` is `3.06xx10^(-6) ohm^(-1) cm^(-1)` and its equivalent conductance is 1.53 `ohm^(-1) cm^(2) "equiv"^(-1)`. The `K_(sp)` for `BaSO_(4)` will be:
A. `4xx10^(-12)`
B. `2.5xx10^(-13)`
C. `25xx10^(-9)`
D. `10^(-6)`