This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sutures and Anastomoses, Subject name: Surgery
[{'content': 'PDS is absorbed within? \nSelect and explain. \nA. 7 days, B. 21 days, C. 100 days, D. 180 days', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Polydioxanone (PDS): A synthetic smooth suture that is delayed absorbable, monofilament and lasts longer than dexon. It is absorbed in 6 months; other propeies are the same as dexon.', 'role': 'assistant'}]