Which one of the following statements is wrong?

  • A
    Algae increase the level of dissolved oxygen in the immediate environment.
  • B
    Algin is obtained from red algae,and carrageenan from brown algae.
  • C
    Agar-agar is obtained from Gelidium and Gracilaria.
  • D
    Laminaria and Sargassum are used as food.

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