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': 'BIRADS score of 4 suggests: \nSelect and explain. \nA. Normal lesion, B. Suspicion of malignancy, C. Mostly benign, D. Proven malignancy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: BIRADS (Breast Imaging Repoing And Data System) Category Definition Likelihood of Malignancy 0 Incomplete assessment, need additional imaging evaluation Not applicable 1 Negative, routine mammogram in 1 year is recommended 0% 2 Benign findings, routine mammogram in 1 year is recommended 0% 3 Probably benign findings, sho term follow-up suggested >0 to <2% 4 Suspicious abnormality, biopsy should be considered0 (4A-Low suspicion; 4B-Moderate suspicion, 4C-High suspicion) 4A:>2-<10% 4B:>10-<50% 4C:>50-<95% 5 Highly suggestive of malignancy, appropriate action should be taken >95% 6 Know biopsy-proven malignancy Not applicable', 'role': 'assistant'}]