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 structure can be felt at the lower part of the medial border of sternocleidomastoid - \nSelect and explain. \nA. Subclavian artery, B. Common carotid artery, C. Internal mammary artery, D. Maxillary artery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Carotid pulse (common carotid artery) can be felt along the anterior margin of sternoleidomastoid at the level of laryngeal prominence of cricoid cartilage.', 'role': 'assistant'}]