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: Surgery
[{'content': 'Not a feature of acute aerial Occlusion ? \nSelect and explain. \nA. Cyanosis, B. Pallor, C. Paralysis, D. Paraesthesia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' ie Cyanosis", 'role': 'assistant'}]