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': 'Normal reduced hemoglobin in blood is ? \nSelect and explain. \nA. 3%, B. 10%, C. 20%, D. 30%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 3%Normally 97% of hemoglobin is oxygenated.3% of hemoglobin is deoxygenated hemoglobin or reduced hemoglobin.", 'role': 'assistant'}]