Which of the following set of molecules will have zero dipole moment?

• A

  Boron trifluoride, hydrogen fluoride, carbon dioxide, $1,3-$dichlorobenzene
• B

  Nitrogen trifluoride, beryllium difluoride, water, $1,3-$dichlorobenzene
• Correct answer
  C

  Boron trifluoride, beryllium difluoride, carbon dioxide, $1,4-$dichlorobenzene
• D

  Ammonia, beryllium difluoride, water, $1,4-$dichlorobenzene

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