The rate of photosynthesis is maximum in the $P$ region of light and minimum in the $Q$ region of light.

  • A
    $P$ - Green, $Q$ - Blue and Red
  • B
    $P$ - Green and Blue, $Q$ - Red
  • C
    $P$ - Blue and Red, $Q$ - Green
  • D
    $P$ - Red, $Q$ - Red and Blue

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