We consider the radiation emitted by the human body. Which of the following statements is true?

  • A
    The radiation is emitted only during the day.
  • B
    The radiation is emitted during the summers and absorbed during the winters.
  • C
    The radiation emitted lies in the ultraviolet region and hence is not visible.
  • D
    The radiation emitted is in the infra-red region.

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