This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ballistics, Subject name: Forensic Medicine
[{'content': 'Death by suicidal gunshot wound usually can be confirmed by \nSelect and explain. \nA. Finger print on the gun, B. Blood on the gun, C. Gun in hand, D. Gunshot residues in the hand', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Presence of Gun shot residue suggests the possibility of use of a firearm. - Various tests for detecting GSR * Dermal Nitrate test or Paraffin test Harrison and Gilroy test Neutron activation analysis Atomic absorption spectroscopy (AAS) Flameless atomic absorption spectrophotometry (FAAS) * Scanning Electron Microscope- Energy Dispersive X-ray spectrometry (SEM-EDX) (Most specific)', 'role': 'assistant'}]