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 vessel is not present in subclavian triangle? \nSelect and explain. \nA. Suprascapular artery, B. Occipital artery, C. III part of subcavian artery, D. External jugular vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Subclavian triangle contains\xa0\n\nThird part of subclavian artery and subclavian vein\xa0\nSuprascapular artery and vein\xa0\nCommencement of transverse cervical artery and termination of the corresponding vein\xa0\nLower part of external jugular vein', 'role': 'assistant'}]