This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Heart, Circulation, and Blood, Subject name: Physiology
[{'content': 'In a person acclimitalized for high altitude, O2 saturation is maintained because of? \nSelect and explain. \nA. Hemiconcentration, B. Decresed CO2 saturation, C. More O2 delievery to tissue, D. Hypoxia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANSWER: (C) More O2 delievery to tissueREF: Ganongs 22nd ed p. 686Acclimatization at high altitude is due to following compensatory mechanismsIncreased RBC 23 BPG which causes decreased affinity of hemoglobin for oxygen, making more oxygen available for tissue.Increased erythropoietinIncrease in number of mitochondriaIncrease in myoglobin contentIncrease in content of cytochrome oxidase', 'role': 'assistant'}]