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': 'Most sensitive test for detection of argemone oil- \nSelect and explain. \nA. Nitric acid test, B. Paper chromatography, C. Phosphatase test, D. Methylene blue test', 'role': 'user'}, {'content': "Answer: B \nExplanation: The most sensitive test is paper chromatography. It can detect argemone oil up to0.001percent. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 608", 'role': 'assistant'}]