Match the List-$I$ with List-$II$ :

Cations	Group reaction
$P \rightarrow Pb^{2+}, Cu^{2+}$	$(i)$ $H_2S$ gas in presence of dilute $HCl$
$Q \rightarrow Al^{3+}, Fe^{3+}$	$(ii)$ $(NH_4)_2CO_3$ in presence of $NH_4OH$
$R \rightarrow Co^{2+}, Ni^{2+}$	$(iii)$ $NH_4OH$ in presence of $NH_4Cl$
$S \rightarrow Ba^{2+}, Ca^{2+}$	$(iv)$ $H_2S$ in presence of $NH_4OH$

• A
  $P$ $\rightarrow i, Q$ $\rightarrow iii, R$ $\rightarrow ii, S$ $\rightarrow iv$
• B
  $P$ $\rightarrow iv, Q$ $\rightarrow ii, R$ $\rightarrow iii, S$ $\rightarrow i$
• C
  $P$ $\rightarrow iii, Q$ $\rightarrow i, R$ $\rightarrow iv, S$ $\rightarrow ii$
• D
  $P$ $\rightarrow i, Q$ $\rightarrow iii, R$ $\rightarrow iv, S$ $\rightarrow ii$