Given:- It is given to find A and X in the reactions.

Explanation:-

The given reactions are completed as below.

$\begin{array}{rl} & \mathrm{Et}-\mathrm{OH}+{\mathrm{SOCl}}_2⟶\mathrm{EHa}+{\mathrm{SO}}_2+\mathrm{HCl}\\ & \mathrm{Et}-\mathrm{OH}+\mathrm{Na}⟶\mathrm{EHONa}+\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right. {\mathrm{H}}_2\\ & \mathrm{EtCl}+\mathrm{EtONa}⟶{\left(\mathrm{Et}\right)}_2\mathrm{O}+\mathrm{NaCl}\end{array}$

Hence, the correct answer is option (C) $C_2{H}_{5}OH and C_2{H}_{5}OH$.