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': 'All of the following are ectomesenchymal in origin except \nSelect and explain. \nA. Branchial arch cartilage, B. Branchial arch nerve, C. Branchial arch arteries, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]