Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?

  • A
    Level $PC$ is "insects" and level $SC$ is "small insectivorous birds".
  • B
    Level $PP$ is "phytoplanktons" in sea and "whale" on top level $TC$.
  • C
    Level one $PP$ is "pipal trees" and the level $SC$ is "sheep".
  • D
    Level $PC$ is "rats" and level $SC$ is "cats".

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