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': 'Denominator of Literacy rate is \nSelect and explain. \nA. Total population, B. Total population ≥ 7 years of age, C. Total male population of ≥ 7 years of age, D. Number of school going children', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]