This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': 'Best prognosis amongst the following histological variants of breast carcinoma is seen with: \nSelect and explain. \nA. Intraductal, B. Colloid (Mucinous), C. Lobular, D. Medullary', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Colloid (Mucinous)(Ref Sabiston 20th Edition Page 840)* Medullary cancers carry intermediate prognosis* Tubular and mucinous cancers carry good prognosis* NOS carry worst prognosis', 'role': 'assistant'}]