This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gas Transport, Subject name: Physiology
[{'content': 'All the following factors shift the oxygen dissociation curve to the right except: \nSelect and explain. \nA. | CO2, B. | temperature, C. | 2, 3 DPG, D. | pH', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: D (| pH) Ref: Guyton & Hull. Transport of Oxygen and Carbon Dioxide in Blood and Tissue Fluids. In: Textbook of Medical Physiology. 12th ed. Philadelphia: SaundersElsevier: 2012. p 500.Explanation:Factors shifting oxygen dissociation curveShift to leftShift to Right| Temperature| Temparature| pH| pH| pCO2 |2.3 DPG| pCO2 | 2, 3 DPGFetal Hb. Carbon monoxide|pO2', 'role': 'assistant'}]