$\mathrm{C}+\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4 \xrightarrow{\Delta} \mathrm{X}+\mathrm{Y}+\mathrm{H}_2 \mathrm{O}$ $X$ and $Y$ in the above reaction are

• A

  $\mathrm{CO}, \mathrm{SO}_3$
• Correct answer
  B

  $\mathrm{CO}_2, \mathrm{SO}_2$
• C

  $\mathrm{CO}, \mathrm{SO}_2$
• D

  $\mathrm{C}_3 \mathrm{O}_2, \mathrm{SO}_2$

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