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: Medicine
[{'content': 'Most sensitive test for sanguinarine is : \nSelect and explain. \nA. Paper chromatography, B. HCL, C. Fecl3, D. Nitric acid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Can be detected by both\xa0Nitric acid test and\xa0paper chromatography test (Most sensitive test).', 'role': 'assistant'}]