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: Social & Preventive Medicine
[{'content': 'Estimated mean Hemoglobin (Hb) of 100 women is 10 g%. Standard deviation (σ) is 1gm %. Standard error of estimate will be – \nSelect and explain. \nA. 0.001, B. 1, C. 10, D. 0.1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]