Physics · JEE | Electrostatic Potential and Capacitance

Consider the following statements regarding dielectrics and polarization: (A) Non-polar molecules have zero permanent dipole moment in the absence of an external electric field. (B) Polar molecules have a permanent dipole moment even without an external electric field. (C) The polarization \( P \) is defined as the dipole moment per unit volume. (D) The dielectric constant \( K \) of a substance is always less than 1. Which of the above statements are correct?

1. A
   (A), (B) and (C) only
2. B
   and (D) only
3. C
   (B), (C) and (D) only
4. D
   (A), (B), (C) and (D)