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
Most sensitive test for sanguinarine is : 
Select and explain. 
A. Paper chromatography, B. HCL, C. Fecl3, D. Nitric acid
B: HCL
Answer: B: HCL 
Explanation: Can be detected by both Nitric acid test and paper chromatography test (Most sensitive test).