This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Nicoldoni sign is also known as \nSelect and explain. \nA. Murray sign, B. Frei sign, C. Darrier sign, D. Branham sign', 'role': 'user'}, {'content': "Answer: D \nExplanation: Branham sign (or Nicoladoni sign): This sign is elicited when aeriovenous fistula is suspected. A pressure on the aery proximal to the fistula will cause: a. Reduction in size of the swelling. b. Disappearance of bruit. c. Fall in pulse rate. d. Pulse pressure returns to normal. Reference : page 1193 SRB's manual of surgery 5th edition", 'role': 'assistant'}]