This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'Efficiency of pasteurization can be best assessed by? \nSelect and explain. \nA. Oxidase test, B. Phosphatase test, C. Catalase test, D. Indole test', 'role': 'user'}, {'content': "Answer: B \nExplanation: Phosphatase test is widely used yo check the efficiency of pasteurizationREF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-606.", 'role': 'assistant'}]