This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'In anemia, the concentration of 2, 3-DPG is? \nSelect and explain. \nA. Decreased, B. Increased, C. A orb, D. Not changed', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Increased', 'role': 'assistant'}]