Identify the incorrect statement(s).
(a)  Interstitial phosphodiester bonds in a polynucleotide chain are hydrolysed by exonucleases.
(b) The primer in DNA replication is a helix stabilising protein.
(c) DNA duplication occurs during S phase of interphase.

• A

  a and b only

• B

  b and c only

• C

  a and c only

• D

  a, b and c