In the extraction of silver,the following reactions take place:
$Ag_2S + NaCN \rightarrow A$
$A + Zn \rightarrow B$
If $B$ is a metal,identify $A$ and $B$.

  • A
    $Na_2[Zn(CN)_4], Zn$
  • B
    $Na[Ag(CN)_2], Ag$
  • C
    $Na[Ag(CN)_4], Ag$
  • D
    $Na_3[Ag(CN)_4], Ag$

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