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: Pathology
[{'content': "Nicoladoni sign is also known as - \nSelect and explain. \nA. Branham sign, B. Murray sign, C. Frei's sign, D. Darrier's sign", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]