This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health education & planning, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following(s) is are state responsibility for healthsector \nSelect and explain. \nA. water supply and sanitation, B. Promotion of research through reseach centres & other bodies, C. Prevention of adulteration, D. Prevention of communicable disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: For purpose of planning health sector has been divided into the following subsectors Water supply and sanitation Control of communicable diseases Medical education training and research Public health services Family planning Indigenous system of medicine(refer pgno:876 park 23 rd edition)', 'role': 'assistant'}]