Match the reagents in Column-$I$ with the major products obtained from the reaction of $Butan-1-ol$ in Column-$II$.

Column-$I$ (Reagents)	Column-$II$ (Products)
$A$. $HCl + ZnCl_2$	$i$. $CH_3CH=CHCH_3$
$B$. $HBr$	$ii$. $CH_3CH_2CH_2CH_2Cl$
$C$. $SOCl_2$	$iii$. $CH_3CH_2CH_2CH_2Br$
$D$. $H_2SO_4, \Delta$	$iv$. $CH_3CH_2CH_2CH_2Cl$

(A) $A \rightarrow ii$ (or $iv$),$B \rightarrow iii$,$C \rightarrow iv$ (or $ii$),$D \rightarrow i$.
$1$. $Butan-1-ol$ reacts with $HCl + ZnCl_2$ (Lucas reagent) to form $1-chlorobutane$ $(CH_3CH_2CH_2CH_2Cl)$.
$2$. $Butan-1-ol$ reacts with $HBr$ to form $1-bromobutane$ $(CH_3CH_2CH_2CH_2Br)$.
$3$. $Butan-1-ol$ reacts with $SOCl_2$ (Thionyl chloride) to form $1-chlorobutane$ $(CH_3CH_2CH_2CH_2Cl)$.
$4$. $Butan-1-ol$ reacts with $H_2SO_4$ upon heating (dehydration) to form $but-1-ene$ (which isomerizes to $but-2-ene$,$CH_3CH=CHCH_3$).