An unknown salt (anion) reacts with dilute $HCl$ to produce gas $X$ (rotten egg smell). Choose the incorrect option regarding gas $X$.

• A
  It gives a white precipitate with $Zn^{2+}$.
• B
  It gives a yellow precipitate with $Cd^{2+}$.
• C
  It gives a pink colored precipitate with $Ni^{2+}$.
• D
  It gives a black precipitate with $Cu^{2+}$.