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
Which structure can be felt at the lower part of the medial border of sternocleidomastoid - 
Select and explain. 
A. Subclavian artery, B. Common carotid artery, C. Internal mammary artery, D. Maxillary artery
B: Common carotid artery
Answer: B: Common carotid artery 
Explanation: Carotid pulse (common carotid artery) can be felt along the anterior margin of sternoleidomastoid at the level of laryngeal prominence of cricoid cartilage.