The correct statement/s about Hydrogen bonding is/are

A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom.

B. Intermolecular H bonding is present in $o$-nitro phenol

C. Intramolecular $\mathrm{H}$ bonding is present in HF.

D. The magnitude of $\mathrm{H}$ bonding depends on the physical state of the compound.

E. H-bonding has powerful effect on the structure and properties of compounds

Choose the correct answer from the options given below:

1. A A, B, C only
2. B A only
3. C A, D, E only Correct answer
4. D A, B, D only