Which of the following is correct sequence in food chain

  • [AIPMT 1991]
  • A

    Fallen leaves $→$ bacteria $→$ insect larvae $→$ birds

  • B

    Phytoplankton $→$ zooplankton $→$ fish

  • C

    Grasses $→$ fox $→$ rabbit

  • D

    Grasses $→$ chameleon $→$ insects $→$ birds

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