In which of the following compounds does the carbon atom attached to the halogen possess $sp^2$ hybridization?

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

Column-$I$ (Reactants)	Column-$II$ (Products)
$A$. $H_2C=CH_2 + Br_2 \xrightarrow{CCl_4}$	$i$. $CH_3CH_2CH_2Br$
$B$. $CH_3CH=CH_2 + HI \rightarrow$	$ii$. $BrCH_2-CH_2Br$
$C$. $C_6H_5N_2^+X^- + KI \rightarrow$	$iii$. $CH_3CHICH_3$
$D$. $CH_3CH=CH_2 + HBr \xrightarrow{peroxide}$	$iv$. $C_6H_5I$

The products $(A)$ and $(B)$ respectively are:

Choose the correct option:

$A$. $ROH + SOCl_2 \rightarrow$	$P$. Darzen process
$B$. $RX (Cl, Br) + NaI \rightarrow$	$Q$. Finkelstein reaction
$C$. $RX (Cl, Br) + AgF \rightarrow$	$R$. Swarts reaction
$D$. $ArX + RX + Na \rightarrow$	$S$. Wurtz-Fittig reaction

$(Z)-2$-Butene reacts with $Br_2/H_2O$. The resulting bromohydrin when treated with methoxide in methanol undergoes an intramolecular $S_N2$ reaction. Taking into consideration the stereochemical consequences of the reaction mechanism involved, choose the final product$(s)$ of these transformations.

What will be the final product in the given reaction?