What are X and Y respectively in the following reaction sequence?

• A

  $\mathrm{NH}_2 \mathrm{NH}_2, \mathrm{C}_6 \mathrm{H}_5\mathrm{SO}_2 \mathrm{Cl} /$ Pyridine
• B

  $\mathrm{NH}_2 \mathrm{NH}_2,\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}$
• C

  $\mathrm{NH}_2 \mathrm{OH}, \mathrm{C}_6 \mathrm{H}_5 \mathrm{SO}_2 \mathrm{Cl} /$ Pyridine
• Correct answer
  D

  $\mathrm{NH}_2 \mathrm{OH} ;\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}$

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