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: Dental
[{'content': 'The skin lesion given below is associated with all except \nSelect and explain. \nA. Diabetes mellitus, B. Gastric adenocarcinoma, C. Lung cancer, D. PCOD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The above image shows velvetty hyperpigmented plaque over neck i.e Acanthosis nigricans which is associated with Diabetes mellitus, Obesity, PCOD & Gastric adenocarcinoma.', 'role': 'assistant'}]