Which of the following statements are correct?

(i) Hydrogen bonding is a special case of dipole - dipole interaction.

(ii) Energy of hydrogen bond varies between 10 to 100 kJ mol^–1.

(iii) Hydrogen bonds are powerful force in determining the structure and properties of compounds like proteins, nucleic acids etc.

(iv) Strength of the hydrogen bond is determined by the coulombic interaction between the lone-pair electrons of the electronegative atom of one molecule and the hydrogen atom of other molecule.

(a) (i) and (ii)

(b) (i), (ii) and (iii)

(c) (ii), (iii) and (iv)

(d) All of these