The sequence of reagents required to convert ethylbromide to propanal is

• Correct answer
  A

  $\mathrm{CH}_3 \mathrm{COOAg}$, DIBAL-H, $\mathrm{H}_2 \mathrm{O}$
• B

  $\mathrm{CH}_3 \mathrm{COOAg}^{-} \mathrm{LiAlH}_4, \mathrm{H}_2 \mathrm{O}$
• C

  $\mathrm{Mg} /$ ether, $\mathrm{HCHO}, \mathrm{H}_2 \mathrm{O}$
• D

  $\mathrm{CH}_3 \mathrm{COOH}, \mathrm{LiAlH}_4, \mathrm{H}_2 \mathrm{O}$

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