Which of the following statements is $NOT$ true for nucleic acids?

  • A
    $5^{\prime}$ end of a polynucleotide has a free phosphate group.
  • B
    Nucleic acids contain a backbone formed of $-C-O-C-$ linkage.
  • C
    $A$ polynucleotide has a free $-OH$ group at the $3^{\prime}$ end.
  • D
    Neighbouring nucleotides are bonded through a phosphodiester linkage.

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