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: Unknown
[{'content': 'Dermatological sign of carcinoma stomach is? \nSelect and explain. \nA. Palmoplantar keratoderma, B. Acquired ichthyosis, C. Acanthosis Nigrans, D. Acrokeratosis paraneopiastica', 'role': 'user'}, {'content': "Answer: C \nExplanation: ANSWER: (C) Acanthosis NigransREF: Fitz Patricks Dermatology 6th Edition Page 1612, Harrison's 18th ed chapter 53Indirect repeat Dermatology 2008,2003 (See table of TYPES AND CAUSES OF ACANTHOSIS NIGRICANS) 8t Surgery June 2009", 'role': 'assistant'}]