Gauss’s law cannot be used to find electric field strength near an electric dipole near a triangle with point charges at its corners, this is because

• A

  These systems do not have spherical symmetry .Hence Gauss’s law is not valid 

• B

  The charge configuration of these systems do not posses adequate symmetry . Gauss’s law is valid, but it is not practically useful .

• C

  Systems do not have cylindrical symmetry .Hence Gauss’s law is not valid

• D

  Gauss’s law does not apply in case of point charges