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': 'Which of the following is not a component of carotid sheath \nSelect and explain. \nA. Vagus nerve, B. Internal jugular vein, C. External carotid artery, D. Internal carotid artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It is a condensation of the fibroareolar tissue around the main vessels of the neck. There are the common and internal carotid arteries and internal jugular vein and the vagus nerve', 'role': 'assistant'}]