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': 'The hemoglobin % of a normal newborn is: \nSelect and explain. \nA. 8, B. 12, C. 10, D. 30', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]