In the following sequence of reactions, $\mathrm{CH}_3-\mathrm{Br} \stackrel{\mathrm{KCN}}{\longrightarrow} A \stackrel{\mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow} B \xrightarrow[\mathrm{LiAlH}_4]{\text { ether }} C$ the end product $(C)$ is

• A

  acetone
• B

  methane
• C

  acetaldehyde
• Correct answer
  D

  ethyl alcohol

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