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': 'Absolute contraindication of conservative breast cancer therapy isa) Large pendulous breastb) History of previous radiationc) Axillary node involvementd) Subareolar lump presente) 1\nst\n trimester pregnancy \nSelect and explain. \nA. be, B. ad, C. bc, D. ce', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]