Reaction of aniline with $\mathrm{HNO}_2$ followed by treatment of dilute acid gives

• A

  $\mathrm{C}_6 \mathrm{H}_5 \mathrm{NHOH}$
• Correct answer
  B

  $\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}$
• C

  $\mathrm{C}_6 \mathrm{H}_5 \mathrm{NHNH}_2$
• D

  $\mathrm{C}_6 \mathrm{H}_6$

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