Consider the following molecule(X).

The major product formed when the given molecule $(X)$ is treated with $\mathrm{HBr}(1 \mathrm{eq})$ is :

Given below are two statements :

Statement (I) : Alcohols are formed when alkyl chlorides are treated with aqueous potassium hydroxide by elimination reaction.

Statement (II) : In alcoholic potassium hydroxide, alkyl chlorides form alkenes by abstracting the hydrogen from the $\beta$-carbon.

In the light of the above statements, choose the most appropriate answer from the options given below :

$$ \text {In the following series of reactions identify the major products } \mathrm{A} \& \mathrm{~B} \text { respectively } $$

Which among the following halides will generate the most stable carbocation in the nucleophilic substitution reaction?