Select the wrong statements with respect to DNA.

I   The backbone of DNA is formed by the sugar-phosphate chain.

II  The two strands of the polynucleotide  are anti-parallel.

III  The nitrogen bases are parallel to the backbone.

IV The backbone contains a hydrogen bond.

• A

  I and II

• B

  III and IV

• C

  II and III

• D

  I and IV