This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Identification, Subject name: Forensic Medicine
[{'content': "Locord's systems is - \nSelect and explain. \nA. Podography, B. Dactylography, C. Poroscopy, D. Cheioscopy", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Poroscopy or Locards system is study of pores of sweat glands on the epidermal ridges at fingeips. Each mm of ridge contains 9-15 pores. It is useful when fragments of fingerprints are available. ref :Dr.K.S.Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27th edition pg. 47.', 'role': 'assistant'}]