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': 'Codex ali Men tarius is related to - \nSelect and explain. \nA. Water purity, B. Milk purity, C. Air pollution, D. Food stardardization', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd i.e., Food standardization Food standards are :- i) Coder alimentarius ii) The Agmark standards iii) Bureau of Indian standards iv) ETA standards", 'role': 'assistant'}]