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': 'Common carotid aery is palpated at? \nSelect and explain. \nA. Upper border of cricoid cailage, B. Upper border of thyroid cailage, C. Hyoid bone, D. Cricothyroid membrane', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Upper border of cricoid cailage', 'role': 'assistant'}]