Which of the following statements is incorrect regarding the structure of nucleic acids?

  • A
    Nucleotides are joined together by phosphodiester linkage.
  • B
    In a $DNA$ molecule,the sugar moiety is $\beta-D-2-deoxyribose$.
  • C
    $A$ unit formed by the attachment of a base to the $1'$ position of sugar is known as a nucleoside.
  • D
    $RNA$ contains four bases: adenine,guanine,cytosine,and thymine.

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