Match the structures of compounds given in Column-$I$ with the classes of compounds given in Column-$II$.

Column-$I$	Column-$II$
$A$. $CH_3-CH(X)-CH_3$	$1$. Aryl halide
$B$. $CH_2=CH-CH_2-X$	$2$. Alkyl halide
$C$. $C_6H_5-X$	$3$. Vinyl halide
$D$. $CH_2=CH-X$	$4$. Allyl halide

(A-2, B-4, C-1, D-3) The classification of the given compounds is as follows:
$A$. $CH_3-CH(X)-CH_3$ is an alkyl halide (specifically,a secondary alkyl halide).
$B$. $CH_2=CH-CH_2-X$ is an allyl halide because the halogen is attached to an $sp^3$ hybridized carbon atom next to a carbon-carbon double bond.
$C$. $C_6H_5-X$ is an aryl halide because the halogen is directly attached to an aromatic ring.
$D$. $CH_2=CH-X$ is a vinyl halide because the halogen is directly attached to an $sp^2$ hybridized carbon atom of a double bond.
Therefore,the correct matching is: $A-2, B-4, C-1, D-3$.