Match the reactants given in Column-$I$ with the products formed in Column-$II$.

Column-$I$ (Reactants)	Column-$II$ (Products)
$A$. $ROH + SOCl_2$	$i$. $RBr + NaHSO_4 + H_2O$
$B$. $ROH + PCl_5$	$ii$. $3RX + H_3PO_3$
$C$. $3ROH + PX_3$	$iii$. $RCl + SO_2 + HCl$
$D$. $ROH + NaBr + H_2SO_4$	$iv$. $RCl + POCl_3 + HCl$

(A-III, B-IV, C-II, D-I) The reactions are as follows:
$A$. $ROH + SOCl_2 \rightarrow RCl + SO_2 + HCl$ (Darbzens process) $(A \rightarrow iii)$
$B$. $ROH + PCl_5 \rightarrow RCl + POCl_3 + HCl$ $(B \rightarrow iv)$
$C$. $3ROH + PX_3 \rightarrow 3RX + H_3PO_3$ $(C \rightarrow ii)$
$D$. $ROH + NaBr + H_2SO_4 \rightarrow RBr + NaHSO_4 + H_2O$ $(D \rightarrow i)$
Therefore,the correct matching is $A-iii, B-iv, C-ii, D-i$.