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': "The term 'pulse granuloma' suggests reaction towards\nthe fragments of foreign material like: \nSelect and explain. \nA. Cotton fibres, B. Black silk, C. Silver amalgam, D. Legumes", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]