`A_(3)B_(2)` is a sparingly soluble salt with molar mass `M(gmol_(-))` and solubility `x` gm `litre_(-1)`, the ratio of the molar concentration of `B^(3-)` to the solubilty product of the salt is `:-`
A. `08(x^(5))/(M^(5))`
B. `(1)/(108)(M^(4))/(x^(4))`
C. `(1)/(54)(M^(4))/(x^(4))`
D. None
