People who have migrated from the planes to an area adjoining Rohtang Pass about six months back

  • [AIPMT 2012]
  • A

    have more $RBCs$ and their haemoglobin has a lower binding affinity to $O_2$

  • B

    are not physically fit to play games like football

  • C

    suffer from altitude sickness with symptoms like nausea, fatigue, etc.

  • D

    have the usual $RBC$ count but their haemoglobin has very high binding affinity to $O_2$

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