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': 'What is the recommendation for bi rads 4? \nSelect and explain. \nA. Regular follow up, B. Tissue diagnosis, C. Short interval follow up, D. Excision', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Birads IV is suspicious for malignancy. It is recommended to take tissue for biopsy.', 'role': 'assistant'}]