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': 'Upper two posterior intercostal aeries arise from ? \nSelect and explain. \nA. Aoa, B. Superior intercostal aery, C. Internal mammary aery, D. Bronchial aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B) Superior intercostal aeryThe 1st and 2nd posterior intercostal aeries arise from the supreme intercostal aery, a branch of the costocervical trunk of the subclan aery. The lower nine aeries are the aoicintercostals, so called because they arise from the back of the thoracic aoa.', 'role': 'assistant'}]