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': 'Level of hyoid bone is at \nSelect and explain. \nA. C3, B. C4, C. C5, D. C7', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Vertebral level of various structures in the neck:\nHyoid bone - C3\nUpper border and notch of thyroid cartilage - C3/C4\nThyroid cartilage - C4-05\nCricoid cartilage - C6\nSuprasternal notch - T2/T3', 'role': 'assistant'}]