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': "Galton's system is used to - \nSelect and explain. \nA. Dactylography, B. Poroscopy, C. Ridgeology, D. None", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Galtons system or dermatoglyphics is study of impressions formed by papillary ridges of fingeips. It was first used in India by William Herschel and modified by Sir Francis Galton ref :.Dr.K.S.Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27th edition pg. 47.', 'role': 'assistant'}]