The six structures (I-VI) of molecules where X, Y, Z are atoms of different elements with different electronegativities, are shown below. The molecules are regular tetrahedral species. Assume the bond lengths in all the structures to be the same.



Identify the pair(s) of structures of molecules in which both the members have the same magnitude of dipole moment.

• Correct answer
  A

  I and III.
• Correct answer
  B

  II and V .
• Correct answer
  C

  IV and VI.
• D

  I and V .

Hence, the correct answer is options: 'A', 'B', 'C'.