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 following tests are used to check the efficiency of pasteurization of mild except - \nSelect and explain. \nA. Phosphatase test, B. Standard plate count, C. Coliform count, D. Methylene blue test', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans is 'd' i.e., Methylene blue test `Methylene blue Reduction test' is an indirect test Jar detection of microorganism in milk. It is carried out on milk prior to the process of pasterurization and is not used to check the efficiency of pasteruization.", 'role': 'assistant'}]