$A$ person at $15000$ feet above sea level develops certain symptoms in $8-24$ hours. These symptoms are:

  • A
    Breathlessness and headache only
  • B
    Dizziness and irritation only
  • C
    Nausea,vomiting,mental fatigue,a bluish tinge on skin,nails,and lips
  • D
    All of the above

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