Among the following,

the compounds which can be reduced with formaldehyde and conc. aq. $\mathrm{KOH},$ are:

• Correct answer
  A

  only $\mathrm{II}$ and $\mathrm{V}$
• B

  only $\mathrm{I}$ and $\mathrm{V}$
• C

  only $\mathrm{II}$ and $\mathrm{III}$
• D

  only $\mathrm{I}, \mathrm{II}$ and $\mathrm{IV}$

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