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
The skin lesion given below is associated with all except 
Select and explain. 
A. Diabetes mellitus, B. Gastric adenocarcinoma, C. Lung cancer, D. PCOD
C: Lung cancer
Answer: C: Lung cancer 
Explanation: The above image shows velvetty hyperpigmented plaque over neck i.e Acanthosis nigricans which is associated with Diabetes mellitus, Obesity, PCOD & Gastric adenocarcinoma.