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': "Galton's system is used for - \nSelect and explain. \nA. Dactylography, B. Poroscopy, C. Ridgeology, D. None", 'role': 'user'}, {'content': "Answer: A \nExplanation: Dactylography (Galton's system) → Study of finger prints.\nPoroscopy (Locard's system) → Study of number, sizes and distribution of pores of sweat glands on ridges (used when only a part of the finger print is available).\nProgram → Study of the footprint.\nCheiloscopy (queiloscopy) → Study of lip prints.\nRugoscopy (Palatoprints) → Study of the anterior part of the palate.", 'role': 'assistant'}]