An aqueous solution `Hg^(2+),Hg_(2)^(2+),Pb^(2+)` and `Cd^(2+)`. The addition of 6N HCl will precipitate

An aqueous solution `Hg^(2+),Hg_(2)^(2+),Pb^(2+)` and `Cd^(2+)`. The addition of 6N HCl will precipitate
A. `Hg_(2)Cl_(2)` only
B. `PbCl_2` only
C. `PbCl_2` and `Hg_(2)Cl_(2)`
D. `PbCl_(2)` and `HgCl_(2)`

An aqueous solution `Hg^(2+),Hg_(2)^(2+),Pb^(2+)` and `Cd^(2+)`. The addition of 6N HCl will precipitate

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