A carrier wave of peak voltage $14 \mathrm{V}$ is used for transmitting a message signal. The peak voltage of the modulating signal given to achieve a modulation index of $80\%$ will be:

• A

  $22.4\mathrm{ }\mathrm{V}$
• B

  $7\mathrm{ }\mathrm{V}$
• Correct answer
  C

  $11.2\mathrm{ }\mathrm{V}$
• D

  $28\mathrm{ }\mathrm{V}$

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