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': 'The MINIMUM recommended space for each factory worker is: \nSelect and explain. \nA. 200 cubic feet, B. 250 cubic feet, C. 500 cubic feet, D. 700 cubic feet', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The WHO/ ILO committee on Occupational health in 1953 recommends a minimum of 500 cubic feet per worker. Sufficient space is needed to prevent not only respiratory diseases but also to ensure a comfoable working environment. Ref: Park 21st edition page: 753.', 'role': 'assistant'}]