From which of the following algae,agar-agar is commercially extracted?
$I.$ Gracilaria $II.$ Fucus $III.$ Sargassum $IV.$ Gelidium $V.$ Turbinaria

  • A
    $III$ and $V$
  • B
    $II$ and $III$
  • C
    $IV$ and $V$
  • D
    $I$ and $IV$

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