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: Surgery
[{'content': 'Adson test used for determining vascular sufficiency is useful in \nSelect and explain. \nA. Peripheral vascular disease, B. Cervical rib, C. Varicose veins, D. AV fistula', 'role': 'user'}, {'content': "Answer: B \nExplanation: SRB Manual of Surgery 4th edition, Pg 458 Adson's test :\nThe hand is raised above after feeling the radial pulse.\nThe patient is asked to take a deep breath and turn the same side. Any change in pulse, i.e. either becoming feeble or absent is noted. Adson's test is done in case of the Cervical rib. \nIt is not useful in varicose veins, PVD or AV fistula.", 'role': 'assistant'}]