This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'A 35 yr female with ductal ca in situ of breast. What is best possible management \nSelect and explain. \nA. Breast conservative surgery, B. Simple mastectomy, C. Modified radical mastectomy, D. Radical mastectomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rx: Breast conservative surgery with to breast and axillary dissection after sentinel LNB(if +&;ve) Ref : SRB&;s 4thE pg:566', 'role': 'assistant'}]