This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'Per capita space for students is a classroom should not be less than _____ sq. Feet- \nSelect and explain. \nA. 5, B. 10, C. 20, D. 50', 'role': 'user'}, {'content': 'Answer: B \nExplanation: parks textbook of preventive and social medicine 23rd edition * percapita space for students in a classroom should not be less than 10sq.ft.', 'role': 'assistant'}]