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': 'Her2 neu receptor is used in breast carcinoma for \nSelect and explain. \nA. Diagnosis of cancer, B. Screening of the breast carcinoma, C. Detect recurrence, D. Predicting response to treatment', 'role': 'user'}, {'content': 'Answer: D \nExplanation: HER2 positive breast cancer is diagnosed by the IHC or FISH test. A result of HER 2 positive is impoant, as it indicates that the cancer can be treated with Herceptin, in combination with other chemotherapy drugs.', 'role': 'assistant'}]