Solid `AgNO_(3)` is gradually added to a solution which is `0.01M` n `Cl^(-)` and `0.01 M` in `CO_(3)^(2-) K_(sp) AgCl=1.8xx10^(-10)` and `K_(sp)Ag_(2)CO_(3)=4xx10^(-12)`
The minimum concentration of `Ag^(+)` required to start the precipation of `Ag_(2)CO_(3)` is
A. `2xx10^(-5)M`
B. `4xx10^(-10)M`
C. `4xx10^(-5)M`
D. `2xx10^(-10)M`