This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual Offenses, Subject name: Forensic Medicine
[{'content': 'Tattoo marks if destroyed their presence can be inferred from the presence of pigment in: \nSelect and explain. \nA. Deep dermis, B. Subcutaneous tissue, C. Regional lymph node, D. Skin of adjoining region', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (C). Regional Lymph nodesThe regional lymph nodes show a deposition of pigment used in the tattoo.If the pigment is deposited below the epidermis, it will slowly become fainter and the pigments disappear in about 10 yearsSuch a faded tattoo may become visible by the use of UV lamp or Infrared photography.', 'role': 'assistant'}]