This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Forensic Medicine
[{'content': 'Tattoo is not visible on autopsy. But the presence of tattoo was informed by relative. What is the next site to check? \nSelect and explain. \nA. Regional lymph node, B. Liver, C. Skin, D. Vessel', 'role': 'user'}, {'content': 'Answer: A \nExplanation: * The regional lymph nodes near a tatoo mark show a deposit of a pigment.* A faded tattoo mark becomes visible by the use of ultraviolet lamp or rubbing the part and examining with magnifying lens.* Infrared photography makes old tattoos readily visible.* The marks are recognised even in decomposed bodies when the epidermis is removed by wiping the area with a moist paper towel or a piece of cloth.', 'role': 'assistant'}]