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': 'Compared to follicular Ca, papillary Ca of thyroid have :a) More male preponderanceb) Bilateralityc) Local recurrence commond) Increased mortalitye) Increased lymph node metastasis. \nSelect and explain. \nA. ab, B. bce, C. acd, D. ace', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]