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: Gynaecology & Obstetrics
[{'content': 'Acanthosis Nigricans associated with malignancy has \nSelect and explain. \nA. Localised skin involvement, B. Abrupt onset, C. Resolves spontaneously, D. Involves neck and axilla only', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Acanthosis Nigricans associated with malignancy has extensive skin involvement and sudden onset.', 'role': 'assistant'}]