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
Codex ali Men tarius is related to - 
Select and explain. 
A. Water purity, B. Milk purity, C. Air pollution, D. Food stardardization
D: Food stardardization
Answer: D: Food stardardization 
Explanation: 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