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: Medicine
[{'content': 'Painless burn in hand is a characteristic feature of- \nSelect and explain. \nA. Syrinyomgelia, B. Thalamic syndrome, C. Cord compression, D. Systemic-lupus-erythematosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]