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: Surgery
[{'content': 'Bevacizumab is used for treatment of carcinoma of: \nSelect and explain. \nA. Breast, B. Stomach, C. lung, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: The use of bevacizumab (a monoclonal antibody to VEGF) was recently approved by the U.S. Food and Drug Administration (FDA) for use in metastatic breast cancer in combination with paclitaxel chemotherapy. This approval was based on results from a phase III trial by the Eastern Cooperative Oncology Group. The group's E2100 trial showed that when bevacizumab was added to paclitaxel chemotherapy, median progression-free survival increased to 11.3 months from the 5.8 months seen in patients who received paclitaxel alone Ref: Schwaz's principle of surgery 9th edition, chapter 17.", 'role': 'assistant'}]