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': 'Poverty line is defined as expenditure required for daily calorie consumption below \nSelect and explain. \nA. 1800, B. 2100, C. 2000, D. 2200', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]