Identify $\mathrm{X}$ $\mathrm{H}_{3} \mathrm{C}_{\mathrm{H}_{3} \mathrm{C}}^{\mathrm{C}}=\mathrm{O} \frac{\mathrm{CH}_{3} \mathrm{MgI}}{\text { dry ether }}$ Intermediate $\stackrel{\mathrm{H}_{2} \mathrm{O}}{\longrightarrow} \mathrm{X}$

• A

  $\mathrm{CH}_{3} \mathrm{OH}$
• B

  Ethyl alcohol
• C

  Methyl cyanide
• Correct answer
  D

  tert-Butyl alcohol

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