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: Social & Preventive Medicine
[{'content': 'After excision of breast for Ca breast, a surgical reconstruction of breast tissue was don This reflects \nSelect and explain. \nA. Primary prevention, B. Secondary prevention, C. Tertiary prevention, D. Medical treatment', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]