The correct statement with regard to the secondary structure of $DNA$/$RNA$ is:

  • A
    $DNA$ possesses a double-strand helix structure and contains thymine as one of the four bases.
  • B
    $DNA$ possesses a single-strand helix structure and contains uracil as one of the four bases.
  • C
    $RNA$ possesses a double-strand helix structure and contains uracil as one of the four bases.
  • D
    $RNA$ possesses a double-strand helix structure and contains thymine as one of the four bases.

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Write the important structural and functional differences between $DNA$ and $RNA$.

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