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': 'The structure derived from the right foh aoic arch? \nSelect and explain. \nA. Right common carotid aery, B. Right subclan aery, C. Aoic arch, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Right subclan aery', 'role': 'assistant'}]