What are ' $\mathrm{X}$ ' and ' $\mathrm{Y}$ ' respectively in the following reactions? $$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}+\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \xrightarrow[293 \mathrm{~K}]{\mathrm{OH}^{-}} \underset{\text { major }}{\mathrm{X}} \xrightarrow{\mathrm{NaBH}_4} \mathrm{Y} $$

• A

  $\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}=\mathrm{C}\left(\mathrm{CH}_3\right) \mathrm{C}_6 \mathrm{H}_5, \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{COC}_6 \mathrm{H}_5$
• B

  $\begin{aligned} & \mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}=\mathrm{C}\left(\mathrm{CH}_3\right) \mathrm{C}_6 \mathrm{H}_5, \mathrm{C}_6 \mathrm{H}_5=\mathrm{CHCH}(\mathrm{OH}) \\ & \mathrm{C}_6 \mathrm{H}_5\end{aligned}$
• Correct answer
  C

  $\begin{aligned} & \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOC}_6 \mathrm{H}_5, \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCH}(\mathrm{OH}) \\ & \mathrm{C}_6 \mathrm{H}_5\end{aligned}$
• D

  $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOC}_6 \mathrm{H}_5, \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{COC}_6 \mathrm{H}_5$

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