This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Air, Light, Sound, Housing, Radiation, Waste Disposal, Subject name: Social & Preventive Medicine
[{'content': 'How much Foot candles light is required for minimum illumination to get a satisfactory vision? \nSelect and explain. \nA. 15-20, B. 15-Oct, C. 20-25, D. 25-30', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 15-20 foot candle light is required for min illumination to get a satisfactory vision. 1 Foot candle = 10.76 Lux DLF (day light factor) in a living room should be >= 8% & min >= 10% in kitchen. DLF is a comparison of light in room compared from natural light outside.', 'role': 'assistant'}]