What is Z in the following reaction sequence?

${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{NH}}_2 \stackrel{\begin{array}{c}\left(\text{i}\right){\text{ NaNO}}_2+\text{HCl}/273\text{ K} \\ \left(\text{ii}\right){\text{ H}}_3{\text{PO}}_2+{\text{H}}_2\text{O }\\ \left(\text{iii}\right)\text{ CO},\text{ HCl anhy }.{\text{ AlCl}}_3/\text{CuCl}\end{array}}{\to } \text{Z}.$

• A

  ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CO}}_{\text{2}}\text{H}$
• B

  ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{OH}$
• Correct answer
  C

  ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{CHO}$
• D

  ${\text{C}}_{\text{6}}{\text{H}}_{\text{6}}$

Hence, the correct answer is option: 'C'.