Select the correct statement.

  • A
    $Sequoia$ is one of the tallest trees.
  • B
    The leaves of gymnosperms are not well adapted to extremes of climate.
  • C
    Gymnosperms are both homosporous and heterosporous.
  • D
    $Salvinia$,$Ginkgo$ and $Pinus$ all are gymnosperms.

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