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
Breast cancer is conservatively treated by following methods 
Select and explain. 
A. It is based on relative size of breast tumor, B. Radiotherapy is given, C. Chemotherapy is given, D. Surgery is best modality of treatment
A: It is based on relative size of breast tumor
Answer: A: It is based on relative size of breast tumor 
Explanation: Breast conservation surgery The amount of breast tissue excised with the lesion may vary with the clinical situation, but is typically 5mm to 10mm in all directions BCS may consist of removal of tumor with 1 cm margin of normal tissue (wide local excision) or a more extensive excision of a whole quadrant of breast (Quandrantectomy) Ref: Mastery of Surgery 5th edition Pgno : 525