$$ \text { } \mathrm{H}_3 \mathrm{CCH}_2 \mathrm{CO}_2 \mathrm{H} \stackrel{\mathrm{P}_2 \mathrm{O}_5}{\longrightarrow} X \stackrel{\mathrm{H}_2 \mathrm{O}}{\longrightarrow} Y \stackrel{\mathrm{SOCl}_2}{\longrightarrow} Z $$ Identify $X, Y$ and $Z$.

• A

  (a)
• Correct answer
  B

  (b)
• C

  (c)
• D

  (d)

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