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: Anatomy
[{'content': 'Sympathetic supply to the heas is from which of the following: \nSelect and explain. \nA. T1 toT5, B. T 2 toT6, C. T 3 toT7, D. T4 toT8', 'role': 'user'}, {'content': 'Answer: A \nExplanation: T1 toT5', 'role': 'assistant'}]