Which of the following reagents is best used for the conversion shown below?

 

The major product of the following reaction is:

The major product formed in the following reaction is:

The major product of the following reaction is:

The major product 'X' formed in the following reaction is:

Compound $\mathrm{\prime }\mathrm{x}\mathrm{\prime }$ is:

In the following reactions, products $\mathrm{A}$ and $\mathrm{B}$ are:

The increasing order of the reactivity of the following with $\text{L}\text{i}\text{A}\text{l}{\text{H}}_4$ is:

$\left(A\right)$

$\left(B\right)$

$\left(C\right)$

$\left(D\right)$

Consider the reactions:

​​​​​​​

Identify $\mathrm{A},\mathrm{ }\mathrm{X},\mathrm{ }\mathrm{Y}$ and $\mathrm{Z}$.

The major product of the following reaction is: