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: Forensic Medicine
[{'content': 'All of the following method used for detecting heavy metals, except : \nSelect and explain. \nA. Harrison & Gilroy test, B. Paraffin test, C. Neutron activation analysis, D. Atomic adsorption spectrospcopy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Paraffin Test Paraffin or Dermal Nitrate test is now an obsolete test, which was used earlier to determine if a suspect had discharged a fire arm by testing for presence of nitrate not heavy metals.Q', 'role': 'assistant'}]