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': 'According to school health services recommendations, a school should have - \nSelect and explain. \nA. 1 urinal\\/ 60 children and 1 privy for 100 children, B. 1 urinal\\/ 80 children and 1 privy for 150 children, C. 1 urinal\\/ 100 children and 1 privy for 100 children, D. 1 urinal\\/ 100 children and 1 privy for 200 children', 'role': 'user'}, {'content': "Answer: A \nExplanation: Provides and urinal should be provided, one urinal for 60 students and one latrine for 100 students. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 534", 'role': 'assistant'}]